Majma al-Zawaid — Hadith 18505

Sayyiduna Anas (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "I will knock on the door of Paradise and it will be opened for me. It will be a door made of gold, whose knocker will be made of silver. The Greatest Light will come before me, and I will go into prostration. At that time such words of praise of Allah Almighty will be inspired in me as were not inspired in anyone before me. Then it will be said to me: 'Raise your head; ask and it will be given, speak and it will be heard, intercede and the intercession will be accepted.' I will say: 'My Ummah!' It will be said: 'You may have whoever has faith in his heart equal to the weight of a grain of barley.'" The Prophet (peace and blessings be upon him) said: "Then I will go into prostration a second time." The Prophet (peace and blessings be upon him) said: "Then words like those will be inspired in me, and the like of that will be said to me, and I will say: 'My Ummah!' It will be said to me: 'You may have whoever has faith in his heart equal to the weight of a mustard seed.' Then I will go into prostration a third time, and the like of that will be said to me. Then I will raise my head and say: 'My Ummah!' It will be said to me: 'You may have every person who said La ilaha illallah (there is no god but Allah) with sincerity.'" (Allamah al-Haythami says:) I say: Some hadiths from Sayyiduna Anas (may Allah be pleased with him) other than this narration are mentioned in the Sahih and in other books.
Abu Ya'la recorded it. Its chain contains a narrator, Yazid al-Raqashi, who is da'if (weak).