Leviticus 22:23-25

23A person may give a bull or a sheep with a body that is the wrong shape. He can use it as an offering to eat with his friends (friendship offering). But God will not take this animal as a gift for a promise. That gift must be perfect. You must not put on the altar an animal that is not perfect.

24A person must not give a gift to the Lord of an animal that has something wrong with its testicles.

25This rule is for Israel's people. You must not take animals from foreigners and then offer them to God as sacrifices. God will not accept them on your behalf, because animals like that are not perfect.’