Narrated Abdullah ibn Abbas: The Messenger of Allah (ﷺ) prescribed the sadaqah (alms) relating to the breaking of the fast as a purification of the fasting from empty and obscene talk and as food for the poor. If anyone pays it before the prayer (of 'Id), it will be accepted as zakat. If anyone pays it after the prayer, that will be a sadaqah like other sadaqahs (alms)

English translation · Sunan Abu Dawud