Aishah (may Allah be pleased with her) narrated that Fatimah (may Allah be pleased with her) sent word to Abu Bakr (may Allah be pleased with him) asking him for her inheritance from the Messenger of Allah (peace and blessings be upon him), from what Allah had restored to the Messenger of Allah (peace and blessings be upon him). At that time Fatimah (may Allah be pleased with her) was asking for the charity of the Prophet (peace and blessings be upon him) in Madinah and Fadak, and what remained of the khumus (one-fifth) of Khaybar. Aishah (may Allah be pleased with her) said: Abu Bakr (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "We are not inherited from; whatever we leave is charity; the family of Muhammad (peace and blessings be upon him) only eat from this wealth, meaning the wealth of Allah; they may not take more than their food." "And by Allah! I will not change the charities of the Prophet (peace and blessings be upon him) from the state they were in during the time of the Prophet (peace and blessings be upon him), and I will manage them just as the Messenger of Allah (peace and blessings be upon him) did." So Abu Bakr (may Allah be pleased with him) refused to give anything of it to Fatimah (may Allah be pleased with her), and Fatimah (may Allah be pleased with her) was upset with Abu Bakr (may Allah be pleased with him) because of that. Abu Bakr (may Allah be pleased with him) said to Ali (may Allah be pleased with him): "By the One in whose hand is my soul, the relatives of the Messenger of Allah (peace and blessings be upon him) are dearer to me to keep ties with than my own relatives. As for the dispute that has arisen between me and you over these charities, I will spare no effort in doing good in them, and I will not leave anything in them that I saw the Messenger of Allah (peace and blessings be upon him) doing except that I do it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12733