The Prophet ﷺ 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."
عَنِ النَّبِيِّ ﷺ قَالَ إِذَا أَنْفَقَتِ الْمَرْأَةُ مِنْ طَعَامِ بَيْتِهَا غَيْرَ مُفْسِدَةٍ فَلَهَا أَجْرُهَا وَلِلزَّوْجِ بِمَا اكْتَسَبَ وَلِلْخَازِنِ مِثْلُ ذَلِكَ