Leviticus 22:28 YLT

²⁶  And Jehovah speaketh unto Moses, saying,

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,

³⁰  on that day it is eaten, ye do not leave of it till morning; I 'am' Jehovah;