Below is a reference to the Beautiful Name of Allah in Quran or Hadith:
Yusuf Ali (Surat Al-'A`rāf (The Heights) Surah #07 of 114, Verse #158 of 206)
Say: "O men! I am sent unto you all, as the Messenger of Allah, to Whom belongeth the dominion of the heavens and the earth: there is no god but He: it is He That giveth both life and death. So believe in Allah and His Messenger, the Unlettered Prophet, who believeth in Allah and His words: follow him that (so) ye may be guided."