Sayyiduna Harithah bin Wahb (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "Shall I not inform you of the people of Paradise?" The Companions said: Of course. He (peace and blessings be upon him) said: "A weak person whom people regard as weak; if he were to swear an oath by Allah, Allah would fulfil it. Shall I not inform you of the people of Hell?" The Companions said: Of course. He (peace and blessings be upon him) said: "Every harsh, gross and arrogant person."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3243