Everything bows to Allah, even your shadow.
Willing or not, all creation submits
The surah keeps showing the people of Makkah signs of Allah's power. Here it says everything in the heavens and earth prostrates to Him. Believers do it willingly. Those who refuse are still subject to Him, and even their shadows lean and stretch through the day.
Walk outside at eight in the morning and your shadow is long beside you. At four in the afternoon it falls the other way. You did not plan either. Your body already follows His order. The only question left is whether your heart joins it.
I am free to live as if no one is in charge.
Everything already bows to Allah; I get to choose to bow willingly.
Next time you see your shadow, let it remind you to make one sincere sajdah today.