Sayyidah Asma bint Abi Bakr (may Allah be pleased with her) said: I asked the Prophet (peace and blessings be upon him); I said: A beggar comes to me; may I give him charity from al-Zubayr's house without his permission? The Messenger of Allah (peace and blessings be upon him) said: "Keep giving a little, and do not tie up the mouth of your purse, otherwise it will be tied up against you."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20627