Exodus 23:10-11

10You must plant seed in your fields for six years. Then you can bring your crops home at harvest time.

11But in the seventh year, you must let your fields lie empty. Do not dig them and do not plant anything in them. Then poor people among you can eat the food that they find in your fields. After that, the wild animals can eat any food that still remains. Do the same thing with your vineyards and your fields of olive trees.