Leviticus 22:20-21

But whatsoever hath a blemish, that shall ye not offer: for it shall not be acceptable for you.

And whosoever offereth a sacrifice of peace-offerings unto Jehovah to accomplish a vow, or for a freewill-offering, of the herd or of the flock, it shall be perfect to be accepted; there shall be no blemish therein.