"When this Ayah was revealed: And warn your near kindred....(26:214), the Messenger of Allah (s.a.w) said: "O Safiyyah bint 'Abdul-Muttalib! O Fatimah bint Muhammed! O Banu 'Abdul-Muttalib! I have no authority on your behalf over Allah for anything. Ask me for whatever you want of my wealth."
Jami` at-Tirmidhi Book 36, Hadith 7