Verse Quran
24:35 Allah is the Light of the heavens and the earth. The Parable of His Light is as if there were a Niche and within it a Lamp: the Lamp enclosed in Glass: the glass as it were a brilliant star: Lit from a blessed Tree, an Olive, neither of the east nor of the west, whose oil is well-nigh luminous, though fire scarce touched it: Light upon Light! Allah doth guide whom He will to His Light: Allah doth set forth Parables for men: and Allah doth know all things.

The Quran's Verse about glass

confidation, join other gods with Allah, back, left, feast, progeny, promise, Shu`aib, guilt-guilty, gratitude, water, family, Solomon, tradition, consultation, shape, ornament, foster mother, suwa, tyrant,