'Gleanings' in the Bible

“When you reap the harvest of your land, you are not to reap to the very edge of your field or gather the gleanings of your harvest.

When you reap the harvest of your land, you are not to reap all the way to the edge of your field or gather the gleanings of your harvest. Leave them for the poor and the foreign resident; I am Yahweh your God.”

If grape harvesters came to you,wouldn’t they leave some gleanings?Were thieves to come in the night,they would destroy only what they wanted.