Exodus 23:9-11

9“You must not oppress foreigners. You know what it’s like to be a foreigner, for you yourselves were once foreigners in the land of Egypt.

10“Plant and harvest your crops for six years,

11but let the land be renewed and lie uncultivated during the seventh year. Then let the poor among you harvest whatever grows on its own. Leave the rest for wild animals to eat. The same applies to your vineyards and olive groves.