תנ״ך אויף דברים 14:22

You must not eat anything that is chametz. In all your dwellings you shall eat matzos.

Do not eat any carcass; to the alien in your cities give it and he will eat it or sell it to a non-Jew, for you are a people sanctified to Adonoy, your God; do not cook a kid in its mother’s milk.

Behold, I have given to the sons of Levi all the tithes in Israel for an inheritance in return for their service which they perform—the service of the Tent of Meeting.