Sayyiduna Anas (may Allah be pleased with him) narrates this saying of the Prophet (peace and blessings be upon him): "Seventy thousand people of my nation will enter Paradise without any reckoning." Sayyiduna Abu Bakr (may Allah be pleased with him) said: "O Messenger of Allah! (Ask) more for us." The Prophet (peace and blessings be upon him) said: "And it will be like this." Sayyiduna Umar (may Allah be pleased with him) said: "O Sayyiduna Abu Bakr! If Allah Almighty wills, He can admit those people into Paradise with a single handful."
Al-Bazzar recorded it, and its narrators are thiqat (trustworthy), although there is slight weakness in a narrator named Abu Hilal al-Rasibi.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب أهل الجنة / 18707