Ashshamsu walqamaru bihusbaan

ٱلشَّمْسُ وَٱلْقَمَرُ بِحُسْبَانٍ

Word By Word:

as-Sham: The Sun

wa: and

al-Qamar: The Moon

bihusbaan: by (precise) calculation

Translation:

The Sun and The Moon follow courses (exactly) computed

Ayah Tafseer:

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.

Source: Yusuf Ali Translations and Notes