Exodus 34:19-21

Revised Standard Version Catholic Edition

¹⁹ All that opens the womb is mine, all your male^[a] cattle, the firstlings of cow and sheep. ²⁰ The firstling of an ass you shall redeem with a lamb, or if you will not redeem it you shall break its neck. All the first-born of your sons you shall redeem. And none shall appear before me empty.

²¹ “Six days you shall work, but on the seventh day you shall rest; in plowing time and in harvest you shall rest.