Leviticus 22:18-21

18“Speak to Aaron, his sons, and all the Israelites and tell them: Any man of the house of Israel or of the resident aliens in Israel who presents his offering  — whether they present payment of vows or freewill gifts to the Lord as burnt offerings —

19must offer an unblemished male from the cattle, sheep, or goats in order for you to be accepted.

20You are not to present anything that has a defect, because it will not be accepted on your behalf.

21“When a man presents a fellowship sacrifice to the Lord to fulfill a vow or as a freewill offering from the herd or flock, it has to be unblemished to be acceptable; there must be no defect in it.