Leviticus 1:2-3

“Speak to the Israelites and say to them: ‘When anyone among you brings an offering to the LORD, bring as your offering an animal from either the herd or the flock. “ ‘If the offering is a burnt offering from the herd, you are to offer a male without defect. You must present it at the entrance to the tent of meeting so that it will be acceptable to the LORD.