Leviticus 19:9 And when ye reap the harvest of your land, thou shalt not wholly reap the corners of thy field, neither shalt thou gather the gleanings of thy harvest.
Leviticus 23:Intro The feasts of the Lord -- The sabbath -- Gleanings to be left -- The day of atonement.
Micah 7:1 Woe is me! for I am as when they have gathered the summer fruits, as the grape gleanings of the vintage; there is no cluster to eat; my soul desired the first ripe fruit.