Maalik ibn Aws ibn Hadathani narrated : I visited Umar ibn Khattab (RA) Uthman ibn Affan (RA)Zubayr ibn Awf and Sad ibn Abu Waqqas (RA) also come there. Suddenly, Ali and Abbas came quarelling over something. Umar (RA) asked them, “I call upon you by Allah with Whose permission the heavens and earth exist do you know that Allah’s Messenger (SAW) said "We have no heirs and whatever we leave behind is sadaqah?” They affirmed, “Yes” Umar said, “When Allah’s Messenger died, Abu Bakr had said, ‘I am the custodian of Allah’s Messenger (SAW) And, you and he came to Abu Bakr, and you demanded your inheritance from the son of your brother, and he the inheritance of his wife from her father.-But, Abu Bakr told you that Allah’s Messenger (SAW) had said: We leave no heirs and what we leave behind is sadaqah. And Allah knows that he was true, righteous and an observer of truth.” {The hadith has a long account here).
[Bukhari 3094, Muslim 1757]