Bulugh al-Maram #737

Abu Sa'id Al-Khudri (RAA) narrated, “We used to offer it (Zakat-ul-fitr) during the lifetime of the Prophet as one sa’ of food or one sa' of dates, or one sa' of barley or one sa' of raisins’’ Agreed upon. In another narration, “or one sa' of dried cottage cheese.” Abu Sa'id then added, “As for myself, I would continue to give it as I used to give during the time of the Prophet. Abu Dawud also transmitted on the authority of Abu Sa'id, “I would never give but a sa'.”