(Devarim 14:3) "You shall not eat any abomination": R. Eliezer says: Whence is it derived that if one slit the ear of a bechor (a first-born beast, thus blemishing it) and ate of it (the beast, after slaughtering it), he transgresses a negative commandment? From "You shall not eat any abomination."

Others say: The verse speaks of offerings which have become invalidated, it being written here "abomination," and, elsewhere, (Ibid. 17:1) "You shall not sacrifice to the L-rd your G-d an ox or a lamb in which there is a blemish, any evil thing, for it is the abomination of the L-rd your G-d." Just as "abomination" there speaks of offerings which have become invalidated (by a blemish), so, "abomination" here.