It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings of Allah be upon him) said: The one who takes care of an orphan child, whether his own or someone else's, I and he will be in Paradise like this, provided that he fears Allah. Imam Malik (may Allah have mercy on him) gestured with his index and middle fingers.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8881