Straw that is on the bed, one may not move it with his hand, but he may move it with his body; and if it was fodder for animals, or if a pillow or a sheet was over it, he may move it with his hand. A householder’s clothes-press we may undo, but we may not press down. A launderer’s [press, however], one may not touch. R’ Yehudah says: If it was undone from before the Sabbath, one may undo it completely and remove it.