It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever intercedes for his brother in some matter, and is then given a gift and accepts it, has stepped through one of the great doors of usury (riba)."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7897
It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever passes his hand over the head of an orphan will have a good deed for every hair."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7898