Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) says that some Bedouins came to the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah! We are owners of livestock; will Sadaqat al-Fitr be waived for us? He (peace and blessings be upon him) said: "No. Pay it on behalf of every young and old, male and female, slave and free person: one sa' of dates, raisins, barley or cheese (aqit)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7731