Allah is the Light of the heavens and the earth. His light is like a niche within which is a lamp; the lamp is within glass, the glass as if it were a brilliant star lit from [the oil of] a blessed olive tree, neither of the east nor of the west, whose oil would almost glow even if untouched by fire. Light upon light. Allah guides to His light whom He wills. And Allah presents examples for the people, and Allah is Knowing of all things. [Such niches are] in houses [mosques] which Allah has ordered to be raised and that His name be mentioned [praised] therein; glorifying Him within them in the morning and the evenings [are] men whom neither trade nor sale distracts from the remembrance of Allah and establishing salat and giving of zakāh. They fear a Day in which the hearts and eyes will [fearfully] turn about – that Allah may reward them according to the best of their deeds, and add even more for them out of His bounty: for Allah provides for those whom He will, without measure.