The Book of Zakat (Kitab Al-Zakat)
Muslim :: Book 5 : Hadith 2244
Asma' reported Allah's Messenger (way peace be upon him) as saying (to her): Spend and do not calculate, (for) Allah would calculate in your case; and do not hoard, otherwise Allah would be withholding from you.
Source materials are from the University of Southern California MSA site|
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