Sahih Bukhari Volume 4, Book 52, Hadith Number 184.

Narated By ‘Abdullah bin Abi Aufa : Allah’s Apostle invoked evil upon the pagans on the ay (of the battle) of Al-Ahzab, saying, “O Allah! The Revealer of the Holy Book, the Swift-Taker of Accounts, O Allah, defeat Al-Ahzab (i.e. the clans), O Allah, defeat them and shake them.”