Leviticus 1:2-3

2The Lord said, ‘Speak to Israel's people. Tell them this. When a person gives an animal to the Lord, it must be a cow or a sheep or a goat.

3A person may want to give a gift to the Lord. That gift must be a male animal from his group of animals. It must be perfect. He must burn the whole animal as a gift to the Lord. The person must bring it to the door of the Tent of Meeting. If he does, the Lord will accept his gift.