Leviticus 22:20-25

Do not present an animal with defects, because the LORD will not accept it on your behalf. “If you present a peace offering to the LORD from the herd or the flock, whether it is to fulfill a vow or is a voluntary offering, you must offer a perfect animal. It may have no defect of any kind. You must not offer an animal that is blind, crippled, or injured, or that has a wart, a skin sore, or scabs. Such animals must never be offered on the altar as special gifts to the LORD. If a bull or lamb has a leg that is too long or too short, it may be offered as a voluntary offering, but it may not be offered to fulfill a vow. If an animal has damaged testicles or is castrated, you may not offer it to the LORD. You must never do this in your own land, and you must not accept such an animal from foreigners and then offer it as a sacrifice to your God. Such animals will not be accepted on your behalf, for they are mutilated or defective.”