Sahih Muslim | Book 5 | Hadith Number 2254

Narrated by Hakim b. Hizam
Hakim b. Hizam reported Allah's Messenger (may peace be upon him) having said this: The most excellent Sadaqa or the best of Sadaqa is that after giving which the (giver) remains rich and the upper hand is better than the lower hand, and begin from the members of your household.