What did the Prophet Muhammad (saw) say to the Bani `Abd Munaf, Bani `Abdul-Muttalib, the mother of Az-Zubair bin Al-Awwam, and Fatima bint Muhammad (peace be upon him), about buying themselves from Allah?
 Narrated Abu Huraira:                     The Prophet said, "O Bani `Abd Munaf! Buy yourselves from Allah; O Bani `Abdul-Muttalib! Buy yourselves from Allah; O mother of Az-Zubair bin Al-Awwam, the aunt of Allah's Apostle, and O Fatima bint Muhammad! Buy yourselves from Allah, for I cannot defend you before Allah. You (both) can ask me from my property as much as you like. "