The mystical Sura 24 of the Quran contains the Ayat an-Nur, the Verse of Light (Q24:35), which reads, "God is the light of the heavens and the earth; the likeness of His light is as a niche wherein is a lamp (the lamp in a glass, the glass as it were a glittering star) kindled from a Blessed Tree, an olive that is neither of the East nor of the West whose oil well nigh would shine, even if no fire touched it; light upon light; (God guides to His light whom he will.)"[4] The phrase "light upon light" (nurun 'ala nur) in this sura is often used among Muslims to denote the infinite beauty, guidance and light of God.[2]