Maliks Muwatta Book 058, Hadith Number 008.

Section : Refraining from Asking.

Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, said from the mimbar when mentioning sadaqa and refraining from asking, "The upper hand is better than the lower hand. The upper hand is the one which expends, and the lower one is the one which asks."