The 100th prohibition is that we are forbidden from offering the fee of a zonah1 or price of a dog on the altar.
The source of this prohibition is G‑d's statement2 (exalted be He), "Do not bring a prostitute's fee3 or the price of a dog4 [to the Temple of G‑d]."
The details of this mitzvah are explained in the sixth chapter of tractate Temurah. One who offers either of them, although the sacrifice is invalid, receives lashes, as if [he sacrificed] a blemished animal.
