Narrated Anas: The Emigrants and the Ansar started digging the trench around Medina carrying the earth on their backs and saying, We are those who have given a pledge of allegiance to Muhammad that we will I carry on Jihad as long as we live. The Prophet kept on replying, O Allah, there is no good except the good of the Hereafter; so confer Your Blessings on the Ansar and the Emigrants.