Exodus 23:16-19 New King James Version (NKJV)
16 and the Feast of Harvest, the firstfruits of your labors which you have sown in the field; and the Feast of Ingathering at the end of the year, when you have gathered in the fruit of your labors from the field.
17 “Three times in the year all your males shall appear before the Lord [a]God.
18 “You shall not offer the blood of My sacrifice with leavened bread; nor shall the fat of My [b]sacrifice remain until morning. 19 The first of the firstfruits of your land you shall bring into the house of the Lord your God. You shall not boil a young goat in its mother’s milk.
Exodus 23:16-19 New International Version (NIV)
16 “Celebrate the Festival of Harvest with the firstfruits of the crops you sow in your field.
“Celebrate the Festival of Ingathering at the end of the year, when you gather in your crops from the field.
17 “Three times a year all the men are to appear before the Sovereign Lord.
18 “Do not offer the blood of a sacrifice to me along with anything containing yeast.
“The fat of my festival offerings must not be kept until morning.
19 “Bring the best of the firstfruits of your soil to the house of the Lord your God.
“Do not cook a young goat in its mother’s milk.