Mukhtasar Sahih Bukhari — Hadith 2054

Narrated from Sayyiduna Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) said: "On the Day of Resurrection, the worst name in the sight of Allah will be that of a person who is called Malik al-Amlak (i.e., King of Kings)."