Chapter 25, Verse 45, The Standard
سورة الفرقان
أَلَمۡ تَرَ إِلَىٰ رَبِّكَ كَيۡفَ مَدَّ ٱلظِّلَّ وَلَوۡ شَآءَ لَجَعَلَهُۥ سَاكِنٗا ثُمَّ جَعَلۡنَا ٱلشَّمۡسَ عَلَيۡهِ دَلِيلٗا
Have you not seen how your Lord spread the shadow. If He willed, He could have made it still then We have made the sun its guide [i.e. after the sunrise, it (the shadow) squeezes and vanishes at midnoon and then again appears in the afternoon with the decline of the sun, and had there been no sun light, there would have been no shadow].
Chapter 26, Verse 189, The Poets
سورة الشعراء
فَكَذَّبُوهُ فَأَخَذَهُمۡ عَذَابُ يَوۡمِ ٱلظُّلَّةِۚ إِنَّهُۥ كَانَ عَذَابَ يَوۡمٍ عَظِيمٍ
But they belied him, so the torment of the day of shadow (a gloomy cloud) seized them, indeed that was the torment of a Great Day.
Chapter 56, Verse 43, The Event, The Inevitable
سورة الواقعة
وَظِلّٖ مِّن يَحۡمُومٖ
And shadow of black smoke,
Chapter 56, Verse 44, The Event, The Inevitable
سورة الواقعة
لَّا بَارِدٖ وَلَا كَرِيمٍ
(That shadow) neither cool, nor (even) good,
Chapter 77, Verse 30, The emissaries
سورة المرسلات
ٱنطَلِقُوٓاْ إِلَىٰ ظِلّٖ ذِي ثَلَٰثِ شُعَبٖ
"Depart you to a shadow (of Hell-fire smoke ascending) in three columns,