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Daily Mitzvah

Day 121: Negative Commandment 217, 218

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Negative Commandment 217 (Digest)
Interbreeding Animals

"You shall not let your cattle breed with a different kind"Leviticus 19:19.

It is forbidden to breed together two different animal species.

Negative Commandment 218 (Digest)
Working with Two Animal Species

"You shall not plow with an ox and donkey together"Deuteronomy 22:10.

It is forbidden to cause animals of two species to work together, e.g., to have them jointly plow, thresh or pull a wagon.

Biblically, this prohibition only applies if one of the animals is kosher (e.g., an ox) and the other of a non-kosher species (e.g., a donkey). The Sages, however, extended this prohibition to apply to any two species.

Translation of (the unabridged text of) Sefer Hamitzvot by Rabbi Berel Bell, member of the Rabbinical Court of Montreal and director of Teacher Training for the Jewish Learning Institute.

From "Sefer Hamitzvot in English," published by Sichos in English.
Daily Quote
Groaning by itself won't do a bit of good. A groan is only a key to open the heart and eyes, so as not to sit there with folded arms, but to plan orderly work and activity, each person wherever he can be effective, to campaign for bolstering Torah, spreading Torah and the observance of mitzvot. One person might do this through his writing, another with his oratory, another with his money...
  –Rabbi Yosef Yitzchak of Lubavitch (quoted in Hayom Yom, Tevet 23)
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