Al-Furqaan 25:45

Do you not see how your Lord extends the shade? If He had willed, He could have made it still. Then We made the sun an indication of it[24].

[24] i.e., indication for its existence or making it apparent.

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.[1028]

[1028] i.e., showing the existence of a shadow or making it apparent by contrast.

45. Have you not seen how your Lord spread the shadow. If He willed, He could have made it still - But We have made the sun its guide (i.e. after the sunrise, the shadow shrinks and vanishes at midnoon and then again appears in the afternoon with the decline of the sun, and had there been no sunlight, there would have been no shadow).

Hast thou not seen how thy Lord hath spread the shade - And if He willed He could have made it still - then We have made the sun its pilot;