R. Yonathan says: This is not necessary, if where all ochel nefesh overrides the festival — the burning of the left-overs of the Pesach does not override the festival, then, where partial ochel nefesh does not override the Sabbath, how much more so should the burning of the left-overs of the Pesach not override the Sabbath! What, then, is the intent of "until morning"? To set a bound for the morning or morning (see above).