Sahih Al Bukhari Hadith Number 1440

Narrate Aisha: The Prophet (peace be upon him) said, “If a woman gives in charity from her husband’s house ..” The Prophet (peace be upon him) also said, “If a lady gives meals (in charity) from her husband’s house without spoiling her husband’s property, she will get a reward and her husband will also get a reward likewise. The husband will get a reward because of his earnings and the woman because of her spending.”