Sayyiduna Amr bin Umayyah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Whatever a man gives to his wife will be (counted as) charity."
Hadith Referenceسلسله احاديث صحيحه / الزواج ، والعدل بين الزوجات وتربية الاولاد والعدل بينهم وتحسين اسمائهم / 1448