What did the Prophet Muhammad (saw) do when the people of the tribe of Daus refused to follow him?
 Narrated Abu Huraira:                     Tufail bin `Amr Ad-Dausi and his companions came to the Prophet and said, "O Allah's Apostle! The people of the tribe of Daus disobeyed and refused to follow you; so invoke Allah against them." The people said, "The tribe of Daus is ruined." The Prophet said, "O Allah! Give guidance to the people of Daus, and let them embrace Islam."