It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: "O Messenger of Allah, the sons of Abu Salamah are under my care, and they have nothing except what I spend on them; will I have a reward for spending on them?" The Prophet (peace and blessings be upon him) said: "Spend on them, and you will have the reward for whatever you spend on them."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20213