Another machloket (dispute) between Beit Shammai and Beit Hillel concerns shikchah (forgotten sheaf). The Mishnah says that if a bundle of grain was left near a wall, a pile of grain, cattle, or tools, and a person forgot it there, the question becomes: Is it considered shikchah or not?
According to Beit Shammai, the bundle is not shikchah, and the owner is allowed to go and bring it back and make it his own. It was left near an important item, and therefore it is not considered shikchah, because the owner will eventually remember that it was there and therefore he did not fully forget it. Beit Hillel say no, it is shikchah and has to be left for the poor, because it is not necessarily that it will be remembered, shikchah.