Sayyiduna Abu Hurayrah (may Allah be pleased with him) says concerning the charity of breaking the fast (zakat al-fitr): It is due on every free person and slave, male and female, young and old, poor and rich: one sa' of dates or half a sa' of wheat. Ma'mar says: It has reached me
that al-Zuhri used to narrate it from the Prophet (peace and blessings be upon him). Ahmad recorded it; its being mawquf (a Companion's statement) is authentic, and its being marfu' (attributed to the Prophet) is not authentic.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الزكاة / 4429