Exodus 23:16

23:16 “You are also to observe the Feast of Harvest, the firstfruits of your labors that you have sown in the field, and the Feast of Ingathering at the end of the year when you have gathered in your harvest out of the field.

Exodus 23:19

23:19 The first of the firstfruits of your soil you must bring to the house of the Lord your God.

“You must not cook a young goat in its mother’s milk.