Sayyiduna Abdul Rahman bin Abi Bakr (may Allah be pleased with him) narrates: I came to visit the Prophet (peace and blessings be upon him), and at that time revelation was descending upon him. When this state ended, he said to Sayyidah Aishah (may Allah be pleased with her): "Hand me my cloak." Then he went to the mosque. Some people were there, and apart from them there was no one else in the mosque. The Prophet (peace and blessings be upon him) sat with those people until the one who was admonishing them finished his talk. Then the Prophet (peace and blessings be upon him) recited Surah Tanzil al-Sajdah and made a long prostration, so long that even those who were about two miles away came; the people heard about this prostration from one another, and so many gathered that the mosque was filled. Sayyidah Aishah (may Allah be pleased with her) sent a message to her family: "Come to the Prophet (peace and blessings be upon him), for I have seen something concerning the Prophet (peace and blessings be upon him) that I had not seen before." Then the Prophet (peace and blessings be upon him) raised his head, and Sayyiduna Abu Bakr (may Allah be pleased with him) said: "O Messenger of Allah, you prolonged the prostration so much?" The Prophet (peace and blessings be upon him) said: "I prostrated to give thanks to my Lord for what my Lord has granted me concerning my Ummah. He has granted that seventy thousand people of my Ummah will enter Paradise without any reckoning." Sayyiduna Abu Bakr said: "O Messenger of Allah, your Ummah is numerous and purer; you should have asked for even more for them." The Prophet (peace and blessings be upon him) said: "Twice or three times (I asked for more)." Then Sayyiduna Umar (may Allah be pleased with him) said: "O Messenger of Allah, may my father and mother be sacrificed for you, your Ummah has been granted to you as a gift!"
Al-Tabarani recorded it in al-Mu'jam al-Kabir. Its chain contains a narrator, Musa bin Ubaydah, and he is da'if (weak). I say: This report has various chains that will come later in the chapter on the Resurrection, if Allah wills.