What was the Prophet Muhammad (saw) trying to do when he told the people of Nijran, "I will send you the most trustworthy man"?
 Narrated Hudhaifa:                     The Prophet said to the people of Nijran, "I will send you the most trustworthy man." (Every one of) the companions of the Prophet was looking forward (to be that person). He then sent Abu 'Ubaida.