´It was narrated that Ibn 'Umar said:` "The Messenger of Allah enjoined the Zakah of Ramadan on everyone, young and old, free and slave, male and female, a Sa of dates or a Sa of barley."
Hadith Referenceسنن نسائي / كتاب الزكاة / 2504
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه