Musnad Ahmad 32:976

'Abd al-Rahman narrated to us, from Hammam, and Bahz narrated to us, from Hammam, from Qatadah, from Anas, that the Prophet (peace and blessings of Allah be upon him) said to Ubayy: "Indeed, Allah has commanded me to recite to you." Ubayy said: "Did Allah name me to you?" He said: "Allah named you to me." Bahz said in his narration: So he began to weep.