Muwatta Imam Malik (Riwayat Ibn al-Qasim)

And with this same chain (it is narrated from Sayyida Aisha, may Allah be pleased with her) that she said: When the Messenger of Allah, peace and blessings be upon him, passed away, the wives of the Prophet, peace and blessings be upon him, intended to send Sayyiduna Uthman ibn Affan, may Allah be pleased with him, to Sayyiduna Abu Bakr as-Siddiq, may Allah be pleased with him, and ask for their share from the inheritance of the Messenger of Allah, peace and blessings be upon him. So Sayyida Aisha, may Allah be pleased with her, said to them: Did the Messenger of Allah, peace and blessings be upon him, not say that we do not leave inheritance; whatever we leave behind is charity?