Exodus 23:15-16

15You shall keep 1the Feast of Unleavened Bread; for seven days you are to eat unleavened bread, as I commanded you, at the appointed time in the 2month of Abib, for in 3that month you came out of Egypt. And 45no one is to appear before Me empty-handed.

16Also you shall keep 6the Feast of the Harvest of the first fruits of your labors from what you sow in the field; also the Feast of the Ingathering at the end of the year 7when you gather in the fruit of your labors from the field.