Narrated Abu Mas`ud Al-Ansari: The Prophet said, "When a Muslim spends something on his family intending to receive Allah's reward it is regarded as Sadaqa for him."
Hadith ReferenceSahih Bukhari / The Book of Provision (Outlay) / Hadith: 5351
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة