Abul Bakhtari (Sa'eed bin Fayruz At-taa-ee) reports that both 'Abbaas Radiyallhu 'Anhu and Ali Radiyallahu 'Anhu went to 'Umar Radiyallahu 'Anhu, during his reign of khilaafah. Each saying to his companion that you are like that, and you like that. 'Umar Radiyallahu 'Anh said to Talhah Radiyallahu 'Anhu, Zubayr Radiyallahu 'Anhu, 'Abdurrahmaan bin 'Awf Radiyallahu 'Anhu and Sa'd bin Abi Waqqaas Radiyallahu 'Anhu who were among the great Sahaabah, that I make you a witness and ask you with an oath to Allah, that did you not hear Rasulullah Sallallhu 'Alayhi Wasallam say:
"All the possessions of a nabi are sadaqah, beside that which he used to feed his family. We the ambiyaa do not leave behind any heirs. This hadith also has a story (Which is being shortened here)".
English reference: Book 54, Hadith 384
Arabic reference: Book 55, Hadith 401