(76) باب الصَّدَقَةِ قَبْلَ الْعِيدِ
Narrated Abu Sa`id Al-Khudri:
In the lifetime of Allah's Messenger (ﷺ) , we used to give one Sa' of food (edible things) as Sadaqat-ul-Fitr (to the poor). Our food used to be either of barley, raisins (dried grapes), cottage cheese or dates.
Reference: Sahih al-Bukhari 1510
In-book reference: Book 24, Hadith 111
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 25, Hadith 586