Sahih Bukhari
Obligatory Charity Tax (Zakat)
Volume: 002 / Book Number: 024 / Hadith Number: 521
Narrated 'Aisha:
The Prophet said, "When a woman gives in charity from her house meals in Allah's Cause without spoiling her husband's property, she will get a reward for it, and her husband will also get the reward for his earnings and the storekeeper will get a reward likewise."