Sahih Muslim Book 19, Hadith Number 4446.

Chapter : The battle of Ahzab or Khandaq (the tribes or the ditch).

According to another version of the tradition, reported on the authority of Anas b. Malik, the Messenger of Allah (may peace he upon him) is reported to have said:

O God, there is no life but the life of the Hereafter, so grant honour to the Ansar and the Muhajirs.