Leviticus 11:23

“You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean, two, a male and his female;

Then Noah built an altar to Yahweh and took of every clean animal and of every clean bird and offered burnt offerings on the altar.

‘You are therefore to separate between the clean animal and the unclean, and between the unclean bird and the clean; and you shall not make yourselves detestable by animal or by bird or by anything that creeps on the ground, which I have separated for you as unclean.

or if a man touches any teeming things by which he is made unclean or any man by whom he is made unclean, whatever his uncleanness,

“These are the animals which you may eat: the ox, the sheep, the goat,

But Peter said, “By no means, Lord, for I have never eaten anything defiled and unclean.”

since they relate only to food and drink and various washings, requirements for the body imposed until a time of reformation.