Obligatory Charity Tax After Ramadaan (Zakat ul Fitr)

Bukhari :: Book 2 :: Volume 25 :: Hadith 586

Narrated Abu Said Al-Khudri:

In the life-time of Allah's Apostle , we used to give one Sa' of food (edible things) as Sadaqat-ul-Fit,r (to the poor). Our food used to be either of barley, raisins (dried grapes), cottage cheese or dates.