Sahih Muslim Book 5, Hadith Number 2330.

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 has been narrated on the authority of A’mash with the same chain of transmitters, but (these words) are not there: “They pass through the religion clean as the arrow passes through the prey.”