It is narrated from Sayyiduna Umar (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) passed away, Sayyiduna Abu Bakr (may Allah be pleased with him) and I came to Sayyiduna Ali (may Allah be pleased with him), and we said: "What is your view about what the Messenger of Allah (peace and blessings be upon him) left behind?" He said: "We have more right than all other people to the Messenger of Allah (peace and blessings be upon him) and to the wealth he (peace and blessings be upon him) left behind." I said: "And what is at Khaybar?" He said: "And what is at Khaybar." I said: "And what is at Fadak?" He said: "And what is at Fadak." So I said: "Listen! By Allah! Not until you cut off our necks with saws (will we accept this); never!"
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated these two hadiths from Zayd bin Aslam (may Allah have mercy on him) except Hisham bin Sa'd, and no one narrated them from Hisham except Musa bin Ja'far al-Ja'fari; Muhammad bin Ali bin Khalaf al-Attar is alone in narrating them both."
Hadith Referenceالمعجم الأوسط / باب الميم / 5339
Hadith Gradingمحدثین:إسناده ضعيف لضعف موسى بن جعفر بن إبراهيم
Hadith Takhrij«قال الهيثمي: فيه موسى بن جعفر بن إبراهيم وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 9، ص 40»»