Leviticus 22:18

15 and they do not pollute the holy things of the sons of Israel -- that which they lift up to Jehovah,

16 nor have caused them to bear the iniquity of the guilt-offering in their eating their holy things; for I [am] Jehovah, sanctifying them.`

17 And Jehovah speaketh unto Moses, saying,

18 `Speak unto Aaron, and unto his sons, and unto all the sons of Israel, and thou hast said unto them, Any man of the house of Israel, or of the sojourners in Israel, who bringeth near his offering, of all his vows, or of all his willing offerings which they bring near to Jehovah for a burnt-offering;

19 at your pleasure a perfect one, a male of the herd, of the sheep or of the goats;

20 nothing in which [is] blemish do ye bring near, for it is not for a pleasing thing for you.

21 `And when a man bringeth near a sacrifice of peace-offerings to Jehovah, to complete a vow, or for a willing-offering, of the herd or of the flock, it is perfect for a pleasing thing: no blemish is in it;