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 (ofEidd), it will be accepted as zakat. If anyone pays it after the prayer, that will be a sadaqah like other sadaqahs (alms).
Hadith Referenceسنن ابي داود / كتاب الزكاة / 1609
Hadith Gradingالألبانی:حسن | زبیر علی زئی:إسناده حسن, مشكوة المصابيح (1818), أخرجه ابن ماجه (1827 وسنده حسن)