Yet gleaning grapes shall be left in it; rather, yet gleanings shall be left in it. There is no mention of grapes, and it is clear that the "gleaning" intended is that of an olive-ground. As the shaking of an olive tree; rather, as at the beating of an olive tree.
The olive crop was obtained, not by shaking, but by beating the trees (Deuteronomy 24:20). The owner was forbidden to "go over the boughs again," in order that a portion of the crop might be left for the stranger, the widow, and the fatherless to glean.
In the top of the uppermost bough. Where the sticks of the beaters had not reached. Four or five in the outmost fruitful branches; rather, four or fire apiece on its fruitful branches, This is the average that would be left, after beating, on a good-sized branch.