Sahih Bukhari
Laws of Inheritance (Al-Faraaid)
Volume: 008 / Book Number: 080 / Hadith Number: 722
Narrated 'Urwa:
'Aisha said, "When Allah's Apostle died, his wives intended to send 'Uthman to Abu Bakr asking him for their share of the inheritance." Then 'Aisha said to them, "Didn't Allah's Apostle say, 'Our (Apostles') property is not to be inherited, and whatever we leave is to be spent in charity?'"