عن أبي مسعود الأنصاري عن النبي صلى الله عليه وسلم قال: إذا أنفق المسلم نفقة على أهله وهو يحتسبها كانت له صدقة (صحيح البخاري رقم 5351)

Hazrat Abu Mas‘ood Ansaari (radhiyallahu ‘anhu) reports that Nabi (sallallahu ‘alaihi wasallam) said, “When a muslim spends on his family with the hope of receiving reward from Allah for it (the spending), it will be a means of him receiving the reward of sadaqah.”