Halacha 1
Just as a person is commanded to honor his father and hold him in awe, so, too, is he obligated to honor his teacher and hold him in awe.
[Indeed, the measure of honor and awe] due one's teacher exceeds that due one's father. His father brings him into the life of this world, while his teacher, who teaches him wisdom, brings him into the life of the world to come.
[Accordingly,] if he saw a lost object belonging to his father and one belonging to his teacher, the lost object belonging to his teacher takes precedence. If his father and his teacher are both carrying loads, he should relieve his teacher's load, and then his father's. If his father and his teacher are held as captives, he should redeem his teacher, and afterwards, redeem his father. However, if his father is [also] a Torah sage, he should redeem his father first.
[Similarly,] if his father is a Torah sage - even if he is not equivalent to his teacher - he should return his lost article, and then that belonging to his teacher.
There is no greater honor than that due a teacher, and no greater awe than that due a teacher. Our Sages declared: "Your fear of your teacher should be equivalent to your fear of Heaven."
Therefore, they said: Whoever disputes the authority of his teacher is considered as if he revolts against the Divine Presence, as implied [by Numbers 26:9]: "...who led a revolt against God."
Whoever engages in controversy with his teacher is considered as if he engaged in controversy with the Divine Presence, as implied [by Numbers 20:13]: "...where the Jews contested with God and where He was sanctified."
Whoever complains against his teacher is considered as if he complains against the Divine Presence, as implied [by Exodus 16:8]: "Your complaints are not against us, but against God."
Whoever thinks disparagingly of his teacher is considered as if he thought disparagingly of the Divine Presence, as implied [by Numbers 21:5]: "And the people spoke out against God and Moses."
Halacha 2
What is meant by disputing the authority of one's teacher? A person who establishes a house of study [where] he sits, explains, and teaches without his teacher's permission in his teacher's lifetime. [This applies] even when one's teacher is in another country.
It is forbidden to ever render a halachic judgment in one's teacher's presence. Whoever renders a halachic judgment in his teacher's presence is worthy of death.
Halacha 3
If a person asked [a student] regarding a halachic question and there were twelve mil between him and his teacher, he is permitted to answer. [Furthermore,] to prevent a transgression, it is permitted to give a halachic judgment even in the presence of one's teacher.
What does the above imply? For example, one saw a person perform a forbidden act because he was unaware of the prohibition or because of his perversity, he should [try to] prevent him [by] telling him: "This is forbidden." [This] applies even in his teacher's presence and even though one's teacher had not given him permission. Wherever the desecration of God's name is involved, no deference is paid to a teacher's honor.
When does the above apply? With regard to a matter that came up incidentally. However, establishing oneself as a halachic authority to sit and reply to all who ask concerning halachic matters is forbidden, even if [the student] is at one end of the world and the teacher at the other, until either:
a) the teacher dies; or
b) the student receives permission from his teacher.
Not everyone whose teacher dies is permitted to sit and render judgment concerning Torah law; only one who is a student worthy of rendering judgment.
Halacha 4
Any student who is not worthy of rendering halachic judgments and does so is foolish, wicked, and arrogant. [Proverbs 7:26:] "She has cast down many corpses" applies to him.
[Conversely,] a sage who is worthy of rendering halachic judgments and refrains from doing so holds back [the spread of] Torah and places stumbling blocks before the blind. "How prodigious are those she slew" [ibid.] applies to him.
These underdeveloped students who have not gathered much Torah knowledge, seek to gain prestige in the eyes of the common people and the inhabitants of their city [by] jumping to sit at the head of all questions of law and halachic judgments in Israel. They spread division, destroy the world, extinguish the light of Torah, and wreak havoc in the vineyard of the God of Hosts. In his wisdom, Solomon alluded to them [as follows, (Song of Songs 2:15)]: "Take for us foxes, little foxes that spoil the vineyards, [our vineyards are blooming.]"
Halacha 5
It is forbidden for a student to refer to his teacher by name, even outside his presence. He should not mention his name in his presence, even when referring to others with the same name as his teacher - as he does with the name of his father. Rather, he should refer to them with different names, even after their death.
The above applies when the name is unusual, and all will thus know to whom it refers.
[A student] should not greet his teacher or respond to the latter's greeting, as is customary when two friends exchange greetings. Rather, he should bow before him and say with awe and reverence: "Peace be upon you, my master." If his teacher greeted him, he should respond: "Peace be upon you, my teacher and master."
Halacha 6
Similarly, he should not remove his tefillin in the presence of his teacher, nor should he recline in his presence. Rather, he should sit before him as one sits before a king.
A person should not pray either in front of his teacher, behind his teacher, or at his teacher's side. Needless to say, one should not walk by his side. Rather, he should distance himself behind his teacher without standing directly behind him and then pray.
One should not enter a bathhouse together with his teacher or sit in his teacher's place. One should not side against his teacher's opinion in his presence or contradict his statements.
One should not sit in his presence until he tells him to sit. One should not stand before him until he tells him to stand or until he receives permission to stand.
When one departs from his teacher, one should not turn his back to him. Rather, one should walk backwards while facing him.
Halacha 7
A person is obligated to stand before his teacher from the time he sees him - as far away as he can see - until [he passes beyond his field of vision] and is hidden: his figure no longer visible. Then, [the student] may sit.
A person is obligated to visit his teacher during the festivals.
Halacha 8
Deference should not be shown to a student while in the presence of his teacher, unless it is customary for his teacher also to show him deference.
All the services which a servant performs for his master should be performed by a student for his teacher. [However,] if [the student] was in a place where he was not recognized and was not wearing tefillin - should he suspect that people will say he is a servant - he need not put on [his teacher's] shoe or remove it.
Whoever prevents his student from serving him withholds kindness from him and takes away his fear of heaven. Any student who deals lightly with a matter related to the honor of his teacher causes the Divine Presence to depart from Israel.
Halacha 9
[A student who] saw his teacher transgress the words of the Torah should tell him: you have taught us such and such.
Whenever he mentions a teaching in his presence, he should tell him: "You have taught us the following, master." He should not mention a concept which he did not hear from his teacher unless he mentions the name of the person who authored it.
When his teacher dies, he should rend all his garments until he reveals his heart. He should never mend them.
When does the above apply? To one's outstanding teacher from whom one has gained the majority of his wisdom.
However, a person who has not gained the majority of his wisdom under a teacher's instruction is considered to be both a student and colleague. He is not obligated to honor him in all the above matters. Nevertheless, he should stand before him, rend his garments at his [death], as he does for all the deceased for whom he is obligated to mourn. Even if he learned only one thing from him, whether it be a small or great matter, he should stand before him and rend his garments at his [death].
Halacha 10
Every student with a proper character will not speak in front of anyone who is wiser than he is, even though he has not learned anything from him.
Halacha 11
An outstanding teacher may, if he desires, forgo his honor with regard to any or all of the above matters to any or all his students.
Even though he forgoes [these honors], the student is obligated to respect him at the time he forgoes [respect].
Halacha 12
Just as students are obligated to honor their teacher, a teacher is obligated to honor his students and encourage them. Our Sages declared: "The honor of your students should be as dear to you as your own."
A teacher should take care of his students and love them, because they are like sons who bring him pleasure in this world and in the world to come.
Halacha 13
Students increase their teacher's wisdom and broaden his horizons. Our Sages declared: "I learned much wisdom from my teachers and even more from my colleagues. However, from my students [I learned] most of all."
Just as a small branch is used to light a large bough, so a small student sharpens his teacher's [thinking processes], until, through his questions, he brings forth brilliant wisdom.
Just as a person is commanded to honor his father and hold him in awe - Exodus 20:12 commands: "Honor your father and mother." Leviticus 19:3 commands: "A man shall fear his mother and father." (See Hilchot Mamrim, Chapter 6, for a discussion of these mitzvot.)
so, too, is he obligated to honor his teacher and hold him in awe. - All the particulars of this halachah apply only regarding rabo hamuzhak, a teacher from whom one has learned the majority of one's wisdom (Bava Metzia 33a.) (See also the commentary on the next halachah.) However, every teacher under whom one has studied Torah deserves a certain measure of respect (Halachah 9).
[Indeed, the measure of honor and awe] due one's teacher exceeds that due one's father. His father brings him into the life of this world - i.e., he sired him and provided him with his fundamental necessities
while his teacher, who teaches him wisdom, brings him into the life of the world to come. - A person's Torah study and the mitzvot it motivates are the means through which he will attain a portion of the world to come.
The reason given by the Rambam has its source in Bava Metzia, ibid. Keritot 28a states a different reason: "He and his father are both obligated to honor his teacher." The Rambam quotes this in Sefer HaMitzvot (Positive Mitzvah 209).
[Accordingly,] if he saw a lost object belonging to his father and one belonging to his teacher, the lost object belonging to his teacher takes precedence. - Therefore, he should tend to his teacher's article first. Only after returning it should he tend to his father's.
If his father and his teacher are both carrying loads, he should relieve his teacher's load, and then his father's. - In his Commentary on the Mishnah, Keritot 6:9, the Rambam equates removing a load with returning a lost article and redeeming a person from captivity in all respects. Accordingly, as explained below, if one's father is also a Torah sage, he should be given priority. However, the Kessef Mishneh explains that where there is no danger to life or property, and only honor is involved, priority should be given to one's teacher, even if one's father is a Torah sage of equivalent stature.
If his father and his teacher are held as captives, he should redeem his teacher, and afterwards, redeem his father. - Note Hilchot Matnot Ani'im, 8:10-18, for a discussion of this important mitzvah.
However, if his father is also a Torah sage - even if he is not equivalent to his teacher (Kessef Mishneh)
he should redeem his father first. - This decision is disputed with regard to the return of a lost object, as explained below. Nevertheless, with regard to the redemption of captives, all agree that because of the life-and-death nature of the question, one's father is given priority if he has achieved some level of scholarship.
[Similarly,] if his father is a Torah sage - even if he is not equivalent to his teacher - he should return his lost article, and then that belonging to his teacher. - The commentaries have noted the apparent contradiction between this statement and Hilchot Aveidah 12:2, which states:
[The following rule applies when] one sees a lost object belonging to his teacher and a lost object belonging to his father: If his father was equal in stature to his teacher, his father's [lost article] is given precedence. If not, his teacher's is given precedence.
This applies only to a person's primary teacher, from whom he learned the majority of his wisdom.
The text of Bava Metzia (ibid.), the source for this decision, is closer to the text in Hilchot Aveidah. Indeed, on that basis, the Hagahot Maimoniot and others maintain that our text contains a printing error. However, that conclusion is difficult to accept, since in his Commentary on the Mishnah, Keritot ibid., the Rambam gives a father who is a Torah sage priority over a person's teacher, without requiring that the father be of greater stature.
The Lechem Mishneh explains that our text refers to a situation when it is possible to retrieve both lost objects, and the only question is whose is given priority. In contrast, Hilchot Aveidah refers to a situation where it is possible to return only one of the lost objects.
Alternatively, the Tashbaytz (Responsa, Vol. III, 275) and the Radbaz (Responsa, Vol. V, 1493) explain that here we are referring to a father who has also instructed his son (albeit, not to the same degree as his teacher). In contrast, Hilchot Aveidah refers to a father who has not instructed his son at all.
There is no greater honor than that due a teacher, and no greater awe than that due a teacher. Our Sages declared - Avot 4:15
"Your fear of your teacher should be equivalent to your fear of Heaven." - In his commentary on that Mishnah, Rashi notes that Pesachim 22b equates the deference due a Torah sage to that due God. Surely, that applies to a sage under whom one has studied.
Therefore, they said - Sanhedrin 110a. The Rambam quotes the entire passage that follows below in Sefer HaMitzvot, Positive Mitzvah 209, in his description of the commandment to honor a Torah sage.
Whoever disputes the authority of his teacher - i.e., "comes out against his decisions...teaching and granting decisions, without his permission" (Sefer HaMitzvot, ibid.). (See the following halachot.)
is considered as if he revolts against the Divine Presence, as implied [by Numbers 26:9]: "...who led a revolt against God." - This verse describes Korach's revolt. Though ostensibly, the revolt was directed against Moses, the Torah considers it as directed against God, Himself.
Whoever engages in controversy with his teacher is considered as if he engaged in controversy with the Divine Presence, as implied [by Numbers 20:13]: "...where the Jews contested with God and where He was sanctified." - Numbers 20:1-3 describes how, because of a lack of water, the Jews began quarreling with Moses. As above, God interpreted their controversy as being directed against God Himself.
Whoever complains against his teacher is considered as if he complains against the Divine Presence, as implied [by Exodus 16:8]: "Your complaints are not against us, but against God." - When the Jews complained against him and Aaron because of a lack of food, Moses gave them this reply. On this verse, the Mechiltah comments: "Whoever speaks against the shepherds of the Jewish people is considered as if he spoke against God."
Whoever criticizes his teacher - explaining his statements and actions in an unfavorable light (Sefer HaMitzvot, ibid.)
is considered as if he criticized the Divine Presence, as implied [by Numbers 21:5]: "And the people spoke out against God and Moses." - In this case as well, the people directed their criticism over a lack of food and water to Moses; however, the Torah considers it as being directed against God.