(45) باب الْمَرْأَةِ تَتَصَدَّقُ مِنْ بَيْتِ زَوْجِهَا
Abu Hurairah reported The Messenger of Allah (ﷺ) as saying When a woman gives something her husband has earned without being commanded by him to do so, she has half his reward.
Reference: Sunan Abi Dawud 1687
In-book reference: Book 9, Hadith 132
English translation: Book 9, Hadith 1683