Musnad Abi Ya'la 4351 — Sayyiduna Anas narrated this hadith to us

Al-Hasan al-Basri (may Allah have mercy on him) said: Sayyiduna Anas (may Allah be pleased with him) narrated this hadith to us in full detail; he narrated it to me twenty years ago, but now the Shaykh has left out part of it. I do not know whether he has forgotten it or disliked telling you lest you rely on it alone. He told me that the Prophet (peace and blessings be upon him) said about the fourth time: Then I will return again and fall down in prostration before my Lord and praise Him with those same words of praise. It will be said to me: O Muhammad! Raise your head; speak, and you will be heard; ask, and you will be given; and intercede, and your intercession will be accepted. I will say: O my Lord! Grant me permission also concerning those who said La ilaha illallah (there is no god but Allah) with a truthful heart. He said: It will be said to me: This matter is not for you; by My Might, My Grandeur and My Majesty, I will certainly bring out of Hell everyone who said La ilaha illallah. The narrator said: I bear witness concerning al-Hasan al-Basri (may Allah have mercy on him) that he narrated this hadith to us on the same day that Sayyiduna Anas (may Allah be pleased with him) narrated it.