It is narrated from Sayyiduna Murrah al-Fihri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I and the one who sponsors an orphan, whether the orphan is his own or someone else's, will be in Paradise like this," and Sufyan pointed with his two fingers.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17889