Sahih al-Bukhari 7219

Az-Zuhri related that Anas ibn Malik heard the second khutba which 'Umar delivered when he sat on the minbar the day after the death of the Prophet, may Allah bless him and grant him peace. He said the tashahhud while Abu Bakr remained silent and did not speak. He said, 'I wished that the Messenger of Allah, may Allah bless him and grant him peace,would have died after us,' meaning that he would have been the last of them. "If Muhammad, may Allah bless him and grant him peace, has died, then Allah Almighty has placed among you a light by which you can be guided by that by which Allah guided Muhammad, may Allah bless him and grant him peace. Abu Bakr was the Companion of the Messenger of Allah, may Allah bless him and grant him peace, the second of the two in the Cave. He is the one entitled among you to your affairs, so rise and give him your allegiance. A group of them had already given allegiance to him before that in the veranda of the Banu Sa'ida. The allegiance of the general public took place at the minbar. Az-Zuhri said that Anas ibn Malik said, "I heard 'Umar say to Abu Bakr on that day, 'Go up the minbar.' He kept on at him until he went up the minbar. The people all gave allegiance to him."