The Book of Zakat (Kitab Al-Zakat)

Muslim :: Book 5 : Hadith 2243

Asma', daughter of Abu Bakr (Allah be pleated with him), reported: The Messenger of Allah (may peace be upon him) said to me: Spend, and do not calculate, or otherwise Allah would also calculate in your case.

Source materials are from the University of Southern California MSA site
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