Hadith 33

the Messenger of Allah (ﷺ) say, "What you feed yourself is Sadaqah for you. What you feed your child is Sadaqah for you. What you feed your wife is Sadaqah for you. What you feed your servant is Sadaqah for you.

Al-Miqdam ibn Ma'dikarib (رضي الله عنه)Al-Adab Al-Mufrad 82Adab of Looking after the Girls