Narrated Al-A'raj:
that Abu Hurairah conveyed to him that the Prophet (ﷺ) said: "The most despicable (Akhna) name to Allah on the Day of Judgement is that of a man named King of Kings. (Malikil-Amlak)." (DE)
English reference (DE): Vol. 5, Book 41, Hadith 2837 (DE)
Arabic reference (DE): Book 43, Hadith 3071 (DE)