Sahih Bukhari Volume 002, Book 024, Hadith Number 562.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 24. Obligatory Charity Tax (Zakat)
Narated By Abu Huraira : Dates used to be brought to Allah's Apostle immediately after being plucked. Different persons would bring their dates till a big heap collected (in front of the Prophet). Once Al-Hasan and Al-Husain were playing with these dates. One of them took a date and put it in his mouth. Allah's Apostle looked at him and took it out from his mouth and said, "Don't you know that Muhammad's offspring do not eat what is given in charity?"