Abu Dawud
General Behavior
Book Number: 036 / Hadith Number: 4939
Narated By Umar ibn al-Khattab : Masruq said: I met Umar ibn al-Khattab (Allah be pleased with him) who said: Who are you? I replied: Masruq ibn al-Ajda'. Umar then said: I heard the Apostle of Allah (pbuh) say: al-Ajda' (mutilated) is a devil.