Deuteronomy 24:19

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.

Deuteronomy 28:51

28:51 They will devour the offspring of your livestock and the produce of your soil until you are destroyed. They will not leave you with any grain, new wine, olive oil, calves of your herds, or lambs of your flocks until they have destroyed you.