Leviticus 22:20-22

Whatever has a defect, you shall not offer, for it shall not be acceptable on your behalf. And whoever offers a sacrifice of a peace offering to the LORD, to fulfill his vow, or a freewill offering from the cattle or the sheep, it must be perfect to be accepted; there shall be no defect in it. Those that are blind or broken or maimed, or have an ulcer or eczema or scabs, you shall not offer to the LORD, nor make an offering by fire of them on the altar to the LORD.