In this Hadith, `Abdullah ibn `Umar (may Allah be pleased with him) said: "The Messenger of Allah (peace and blessings of Allah be upon him) prescribed the charity of Al-Fitr," referring to Zakat Al-Fitr given at the end of Ramadan. The wisdom behind its obligation includes: to spare the poor from having to ask on the day of `Eid, and to purify the fasting person from (the sinfulness of) any idle talk or inappropriate behavior that may have occurred during the fast. He continued: "males and females, free persons and slaves," indicating that it is mandatory upon every Muslim individual, whether young or old. The obligation is fulfilled on behalf of minors by their parents or guardians, and on behalf of slaves by their masters. It is to be given as "a Sa` of dates or a Sa` of barley," where a Sa` is equivalent to four Mudds, and a Mudd is the amount that fills two cupped hands. Ibn `Umar further stated: "Then people began to equate it," meaning that they began to give Zakat in an amount equivalent to a Sa` of dates or barley.It is said that the “people” referred to here were Mu`awiyah ibn Abu Sufyan (may Allah be pleased with him) and those who followed his view, who substituted it with "half a Sa` of wheat," i.e., wheat instead of dates or barley..