Musnad Abu Ya'la al-Mawsili 148:101

He said: He narrated this hadith to us, and it is all that he has narrated to me for twenty years. He has left out something, and I do not know whether the Sheikh forgot or disliked narrating it to you so that you might rely [upon it]. He narrated to me, then he said in the fourth [instance]: "Then I shall return and fall prostrate before Him, and I shall praise Him with those praises. Then it will be said to me: 'O Muhammad, raise your head, speak and you shall be heard, ask and you shall be given, and intercede and your intercession shall be accepted.' So I will say: 'O my Lord, grant permission regarding whoever said "There is no god but Allah" sincerely by it.' He said: It will be said: 'It is not for you. By My Might, My Majesty, and My Greatness, I shall bring out of it whoever said "There is no god but Allah."'" He said: So I bear witness regarding Al-Hasan that he narrated this hadith to us on the day Anas narrated it.