What is considered leket? That which falls at the time of the reaping. [If] he was reaping [and] he reaped a handful [or] plucked a fistful [and] a thorn struck him and [the ear of produce] fell from his hand to the ground, it belongs to the owner.  [From] within the hand and within the sickle, [it belongs] to the poor. [But from] behind the hand and behind the sickle [it belongs] to the owner. [From] the tip of the hand and from the tip of the sickle —- R' Yishmael says: [It belongs] to the poor; [but] R' Akiva says: [It belongs] to the owner.