Leviticus 22:27-29

Young's Literal Translation

²⁷ `When ox or lamb or goat is born, and it hath been seven days under its dam, then from the eighth day and henceforth, it is pleasing for an offering, a fire-offering to Jehovah;

²⁸ but an ox or sheep -- it and its young one, ye do not slaughter in one day.

²⁹ `And when ye sacrifice a sacrifice of thanksgiving to Jehovah, at your pleasure ye do sacrifice,