Allāh is the Light of the heavens and the earth. The example of His light is like a niche within which is a lamp; the lamp is within glass, the glass as if it were a pearly [white] 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. Allāh guides to His light whom He wills. And Allāh presents examples for the people, and Allāh is Knowing of all things.
Allah is the Light of the heavens and the earth, a verse that opens the chest when recited slowly.
La hasada illa fi-thnatayn: rajulun atahu-llahu malan fa-sullita ala halaketihi fi-l-haqq, wa rajulun atahu-llahu-l-hikmata fa-huwa yaqdi biha wa yu'allimuha.
No envy except in two: a man whom Allah has given wealth and the power to spend it on what is right, and a man whom Allah has given wisdom by which he judges and teaches.