(6) Zakat
كتاب الزكاة
(9a) Chapter: Sadaqa given by a Woman from her Husband’s Property - Section 1
(8) باب صدقة المرأة من مال الزوج - الفصل الأول
Mishkat al-Masabih 1948 
Abu Huraira reported God’s messenger as saying, “When a woman gives something her husband has earned without being commanded by him to do so, she has half his reward.” (Bukhari and Muslim.)
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا أَنْفَقَتِ الْمَرْأَةُ مِنْ كَسْبِ زَوْجِهَا مِنْ غَيْرِ أَمْرِهِ فَلَهَا نِصْفُ أَجْرِهِ»
 مُتَّفَقٌ عَلَيْهِ  (الألباني)حكم :
Reference : Mishkat al-Masabih 1948
In-book reference : Book 6, Hadith 173