'Harvest time' in the Bible

At harvest time [when you reap the increase] you shall give one-fifth of it to Pharaoh, and four-fifths will be your own to use for seed for the field and as food for you and those of your households and for your little ones.”

Then three of the thirty chief men went down and came to David at harvest time in the cave of Adullam, while an army of Philistines was encamped in the Valley of Rephaim.