The book of Iman (Faith)
12. abu Hurairah, narrated: We were siting around the Messenger of Allah salla alayhi wa sallam: abu Bakr and ´Umar, were also there among the audience. Meanwhile the Messenger of Allah stood up and left us. He delayed in coming back to us, which caused anxiety that he might have been attacked by some enemy when we were not with him; so being alerted we rose. I was the first to be concerned. I therefore went out to search for the Messenger of allah salla alayhi wa sallam and came to a compound belonging to Banu An-Najjar - a section of the Ansar. I wnt round it lokkfor a gate but failed to find one. Seeing a Rabi´´ (i.e. streamlet) flowing into the compound from an external weel. I crouched, like a fox, and slunk into (the place) where Messenger of Allah was. Then the Prophet salla alayhi wa sallam asked: ´´It is Abu Hurairah?´´ I replied: ´´Yes, O Messenger of Allah.´´ He said: ´´ What is the matter with you?´´ I replied: ´´You were amongst us but rose, went away and delayed for ...