Leviticus 22:20-22

You are not to present anything that has a defect, because it will not be accepted on your behalf. “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. You are not to present any animal to the LORD that is blind, injured, maimed, or has a running sore, festering rash,  or scabs; you may not put any of them on the altar as a food offering to the LORD.