Sayyiduna Abu Mas’ud Badri, may Allah be pleased with him, said: The Noble Prophet, peace and blessings be upon him, said: “When a Muslim spends on his family (wife and children) hoping for reward from Allah Almighty, then that (spending) is charity for him.”
Hadith Referenceسنن دارمي / من كتاب الاستئذان / 2699