It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whatever a person spends on himself is charity for him, and likewise what he spends on his wife and on his children."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7901