God's Prophet (a.s) said: “Whoever entrusts an orphan with a Muslim couple until the child becomes needless, will certainly go to Heaven.”
وقال رسول الله (صلى الله عليه وآله): من ضم يتيما بين أبوين مسلمين حتى يستغني فقد وجبت له الجنة البتة.
Similar narrations
Al-Kāfi #393“This is concerning my question before abu ‘Abd Allah (a.s.), about the case of a man who consumes the properties of orphans. He (the Imam)...