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.)
Hadith Referenceمشكوة المصابيح / كتاب الزكاة / 1948
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (5360) و مسلم (1026/84)»