Silsilat al-Ahadith al-Sahihah

Abu Huraira (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "A believer is friendly (with people) and people are friendly with him. There is no good in a person who is neither friendly with others nor are others friendly with him. And the best among people is the one who is most beneficial to others."