Surah 55. Ar-Rahman, Ayah 5

Lit., "according to a definite reckoning".

In the great astronomical universe there are exact mathematical laws, which bear witness to Allah's Wisdom and also to His favours to His creatures; for we all profit by the heat and light, the seasons, and the numerous changes in the tides and the atmosphere, on which the constitution of our globe and the maintenance of life depend.