What was the response of Abu Bakr when the Prophet Muhammad (peace be upon him) said that Allah had sent him as the Apostle?
 Narrated Abu Ad-Darda:                     There was a dispute between Abu Bakr and `Umar, and Abu Bakr made `Umar angry. So `Umar left angrily. Abu Bakr followed him, requesting him to ask forgiveness (of Allah) for him, but `Umar refused to do so and closed his door in Abu Bakr's face. So Abu Bakr went to Allah's Apostle while we were with him. Allah's Apostle said, "This friend of yours must have quarrelled (with somebody)." In the meantime `Umar repented and felt sorry for what he had done, so he came, greeted (those who were present) and sat with the Prophet and related the story to him. Allah's Apostle became angry and Abu Bakr started saying, "O Allah's Apostle! By Allah, I was more at fault (than `Umar)." Allah's Apostle said, "Are you (people) leaving for me my companion? (Abu Bakr), Are you (people) leaving for me my companion? When I said, 'O people I am sent to you all as the Apostle of Allah,' you said, 'You tell a lie.' while Abu Bakr said, 'You have spoken the truth ."