Narrated 'Aisha:
Allah's Apostle ﷺ said, "When a woman gives in charity from her husband's meals without wasting the property of her husband, she will get a reward for it, and her husband too will get a reward for what he earned and the store-keeper will have the reward likewise."
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ أَبِي وَائِلٍ، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" إِذَا تَصَدَّقَتِ الْمَرْأَةُ مِنْ طَعَامِ زَوْجِهَا غَيْرَ مُفْسِدَةٍ كَانَ لَهَا أَجْرُهَا، وَلِزَوْجِهَا بِمَا كَسَبَ، وَلِلْخَازِنِ مِثْلُ ذَلِكَ ".
Sahih al-Bukhari, 1437
Sahih al-Bukhari, Vol. 2, Book of Tax (Zakat), Hadith 518
Sahih al-Bukhari, Book of Tax (Zakat), Hadith 518