Khusaylah bint Wathilah (may Allah have mercy on her) said: I heard my father say: "Indeed, he has succeeded who purifies himself, and remembers the name of his Lord and prays" [Surah al-A'la: 15] (means) giving wheat (as Sadaqat al-Fitr) at the prayer ground on the day of Eid al-Fitr before the prayer.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18459