The Criterion
IN THE NAME OF GOD, THE MOST GRACIOUS, THE DISPENSER OF GRACE[25:62]
And He it is who causes the night and the day to succeed one another, [revealing Himself in His works] unto him who has the will to take thought – that is, has the will to be grateful.

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* v.62 : Lit., “or” (aw) – a particle which obviously does not denote here an alternative but, rather, an explanatory amplification, similar to the expression “in other words.”