Leviticus 22:21

And when anyone offers a sacrifice of peace offerings to the Lord to fulfill a vow or as a freewill offering from the herd or from the flock , to be accepted it must be perfect ; there shall be no blemish in it.

When anyone brings from the herd or flock a fellowship offering to the Lord to fulfill a special vow or as a freewill offering, it must be without defect or blemish to be acceptable.

And whosoever offereth a sacrifice of peace offerings unto the Lord to accomplish his vow, or a freewill offering in beeves or sheep, it shall be perfect to be accepted; there shall be no blemish therein.