The
135th prohibition is that an uncircumcised [Kohen] is forbidden from eating terumah. He is also forbidden from
eating any other sanctified foods.
This
prohibition is not explicitly stated, but learned through a gezera shava (the principle that, when
handed down by tradition, two laws can be compared because they share an
identical word). In passing this law down, our Sages explained that it counts
as a Biblical commandment rather than of Rabbinic origin.
In
the words of tractate Yevamos: "What is the source for the law that an
uncircumcised [Kohen] may not eat terumah?
Since the words toshav v'sachir are
written both by the Pesach offering and by terumah,
we can compare them — just as by the Pesach sacrifice, the uncircumcised man is
prohibited just like the toshav v'sachir,
so too regarding terumah, the
uncircumcised man is prohibited just like the toshav v'sachir." This applies [not only to terumah, but] to other sanctified things.
The
above passage is repeated in Sifra.
There
[in the Sifra], Rabbi Akiva explains
that the phrase, "Any man" comes to
include one who is uncircumcised.
In
Yevamos it is explained that a mashuch [i.e., one whose remaining foreskin was pulled down after
circumcision, making it appear as if he was not circumcised] is allowed to eat terumah by Biblical law. He is forbidden
only by Rabbinic law because he has the appearance of one who is uncircumcised.
It
has therefore been explained that it is a Biblical prohibition for an
uncircumcised man to eat terumah, and
it is the mashuch who is forbidden by
Rabbinic law. You should understand this.
It
is also explained there that a mashuch
must be circumcised [a second time] by Rabbinic law.