Narrated Abu Mas'ud: The Prophet said, "If a man spends on his family (with the intention of having a reward from Allah) sincerely for Allah's sake then it is a (kind of) alms-giving in reward for him.
Hadith ReferenceSahih Bukhari / The Book of Belief (Faith) / Hadith: 55
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة