What permisson did the Prophet Muhammad (peace be upon him) gave to Jabir b. 'Abdullah after he was exhausted from the expedition?
 Jabir b. 'Abdullah reported:                      I went with the Messenger of Allah (may peace be upon him) on an expedition and my camel delayed me and I was exhausted. The Messenger of Allah (may peace be upon him) thus came earlier than I, whereas I came on the next day and went to the mosque and found him (the Holy Prophet) at the gate of the mosque. He said: It is now that you have come. I said. Yes. He said: Leave your camel and enter (the mosque) and observe two rak'ahs. He (the narrator) said: So I entered and observed (two rak'ahs) of prayer and then went back.