The
145th mitzvah is that we are
commanded regarding the law of ch'ramim,
i.e., when a person declares something he owns to be forbidden by saying, "This
is cherem," he must give that object
to a kohen, because a statement of cherem
which is unspecified goes to the kohanim. If, however, he specified
that it is for G‑d, then it goes for the Temple fund (bedek habayis).
The
source of this commandment is G‑d's statement, "Any cherem
to G‑d which a person declares from among his possessions, whether a human
being or an animal [or a hereditary field, cannot be sold or redeemed]."
[The
Torah] teaches us that a statement of cherem
which is unspecified goes to the kohanim by saying [Regarding a field that is released by the
jubilee year, "It becomes consecrated to G‑d;] like a field that has been made cherem, it becomes the property of the
kohanim."
The
details of this mitzvah are explained
in the eighth chapter of Erachin and the beginning of Nedarim.