“Yahweh spoke to Moses. Speak to Aaron and his sons and all the people of Israel, and say to them, ‘When anyone of the house of Israel or of the aliens residing in Israel presents an offering, whether in payment of a vow or as a freewill offering that is offered to Yahweh as a burnt offering, to be acceptable on your behalf, it shall be a male without blemish, of the cattle, or the sheep, or the goats. You shall not offer anything that has a blemish, for it will not be acceptable in your behalf.’”
Once again, Yahweh spoke to Moses to tell Aaron, but not directly to Aaron. The burnt offering sacrificial animal must be a male without blemish, whether bull, sheep, or goat.
“When anyone offers a sacrifice of well-being to Yahweh, in fulfillment of a vow or as a freewill offering, from the herd or from the flock, to be accepted it must be perfect. There shall be no blemish in it. Anything blind, injured, maimed, or having a discharge or an itch or scabs, you shall not offer to Yahweh or put any of them on the altar as offering by fire to Yahweh. An ox or a lamb that has a limb too long or too short you may present for a freewill offering. But it will not be accepted for a vow. Any animal which has its testicles bruised, crushed, torn, or cut, you shall not offer to Yahweh. Such you shall not do within your land. Nor shall you accept any such animals from a foreigner to offer as food to your God. Since there are mutilated, with a blemish in them, they shall not be accepted in your behalf.”
Here is the list of unacceptable animals. Those with blemishes, blind, injured, maimed, or with a discharge, itch, or scab cannot be accepted. An ox or lamb whose legs are too short or too long can be a freewill offering, but not a vow offering. Any animal with bruised, crushed, torn or cut testicles is not acceptable.
“Yahweh spoke to Moses. ‘When an ox, a sheep, or a goat is born, it shall remain seven days with its mother. From the eighth day on, it shall be acceptable as Yahweh’s offering by fire. But you shall not slaughter, from the herd or the flock, an animal with its young on the same day. When you sacrifice a thanksgiving offering to Yahweh, you shall sacrifice it so that it may be accepted on your behalf. It shall be eaten on the same day. You shall not leave any of it until morning. I am Yahweh.’”
All animals must be at least eight days old to be acceptable. However, you cannot slaughter a mother animal with its young on the same day. You have to eat the animal on the same day and not the next day.