Exodus 23:17-19

Young's Literal Translation

¹⁷ `Three times in a year do all thy males appear before the face of the Lord Jehovah.

¹⁸ `Thou dost not sacrifice on a fermented thing the blood of My sacrifice, and the fat of My festival doth not remain till morning;

¹⁹ the beginning of the first-fruits of thy ground thou dost bring into the house of Jehovah thy God; thou dost not boil a kid in its mother's milk.