Ibn Kathir (Abridged)
Hafiz Ibn KathirEverything prostrates unto Allah
Allah affirms His might and power, for He has full control over everything, and everything is subservient to Him. Therefore, everything, including the believers, prostrate to Allah willingly, while the disbelievers do so unwillingly,وَظِلَـلُهُم بِالْغُدُوِّ(and so do their shadows in the mornings), in the beginning of the days,وَالاٌّصَالِ(and in the afternoons.) towards the end of the days. Allah said in another Ayah,أَوَ لَمْيَرَوْاْ إِلَىخَلَقَ اللَّهُ مِن شَىْءٍ يَتَفَيَّأُ(Have they not observed things that Allah has created: (how) their shadows incline.) 16:48قُلْ مَن رَّبُّ السَّمَـوَتِ وَالاٌّرْضِ قُلِ اللَّهُ قُلْ أَفَاتَّخَذْتُمْ مِّن دُونِهِ أَوْلِيَآءَ لاَ يَمْلِكُونَ لأَنْفُسِهِمْ نَفْعًا وَلاَ ضَرًّا قُلْ هَلْ يَسْتَوِى الاٌّعْمَى وَالْبَصِيرُ أَمْ هَلْ تَسْتَوِى الظُّلُمَـتُ وَالنُّورُ أَمْ جَعَلُواْ للَّهِ شُرَكَآءَ خَلَقُواْ كَخَلْقِهِ فَتَشَابَهَ الْخَلْقُ عَلَيْهِمْ قُلِ اللَّهُ خَـلِقُ كُلِّ شَىْءٍ وَهُوَ الْوَاحِدُ الْقَهَّـرُ