Leviticus 23:29

23:29 Indeed, any person who does not behave with humility on this particular day will be cut off from his people.

Deuteronomy 24:19-21

24:19 Whenever you reap your harvest in your field and leave some unraked grain there, you must not return to get it; it should go to the resident foreigner, orphan, and widow so that the Lord your God may bless all the work you do. 24:20 When you beat your olive tree you must not repeat the procedure; the remaining olives belong to the resident foreigner, orphan, and widow. 24:21 When you gather the grapes of your vineyard you must not do so a second time; they should go to the resident foreigner, orphan, and widow.

Ruth 2:2

2:2 One day Ruth the Moabite said to Naomi, “Let me go to the fields so I can gather grain behind whoever permits me to do so.” Naomi replied, “You may go, my daughter.”

Ruth 2:15

2:15 When she got up to gather grain, Boaz told his male servants, “Let her gather grain even among the bundles! Don’t chase her off!