Sahih Muslim Book 5, Hadith Number 2337.

Chapter : It is forbidden to pay Zakat to the Messenger of Allah (may peace be upon him) and Banu Hashim and Banu Muttalib.

This Hadith had been transmitted by Sulaiman Shaibani with the same chain of narrators (and the words are), “There would arise out of (this group) many a group “