Mishkat al-Masabih 6 Zakat كتاب الزكاة 172

وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «إِذْ أَنْفَقَتِ الْمَرْأَةُ مِنْ طَعَامِ بَيْتِهَا غَيْرَ مُفْسِدَةٍ كَانَ لَهَا أَجْرُهَا بِمَا أَنْفَقَتْ وَلِزَوْجِهَا أَجْرُهُ بِمَا كَسَبَ وَلِلْخَازِنِ مِثْلُ ذَلِكَ لَا يَنْقُصُ بَعْضُهُمْ أَجْرَ بعض شَيْئا»

‘A’isha reported God’s messenger as saying, “When a woman gives some of the food in her house, not wasting it, she will have her reward for what she has given and her husband will have his for what he earned. The same applies to a storekeeper. In no respect does the one diminish the reward of the other.” (Bukhari and Muslim.)