Al-Furqan 25:45

Alam tara ila rabbika kayfa madda aththillawalaw shaa lajaAAalahu sakinan thumma jaAAalnaashshamsa AAalayhi daleela

Have you not considered your Lord - how He extends the shadow, and if He willed, He could have made it stationary? Then We made the sun for it an indication.

Have you not observed how your Lord stretched out the shadow (of the sun)? If He so willed, He would have made it stand still. Then We made the sun an indicator for it.