The Prostration
إِنَّمَا يُؤْمِنُ بِـَٔايَـٰتِنَا ٱلَّذِينَ إِذَا ذُكِّرُوا۟ بِهَا خَرُّوا۟ سُجَّدًا وَسَبَّحُوا۟ بِحَمْدِ رَبِّهِمْ وَهُمْ لَا يَسْتَكْبِرُونَ ۩
Only those believe in Our verses who, when they are reminded by them, fall down in prostration and exalt [Allah] with praise of their Lord, and they are not arrogant.
Nearby ayahs help place verse 32:15 in sequence and meaning.
وَلَوْ شِئْنَا لَـَٔاتَيْنَا كُلَّ نَفْسٍ هُدَىٰهَا وَلَـٰكِنْ حَقَّ ٱلْقَوْلُ مِنِّى لَأَمْلَأَنَّ جَهَنَّمَ مِنَ ٱلْجِنَّةِ وَٱلنَّاسِ أَجْمَعِينَ
And if We had willed, We could have given every soul its guidance, but the word from Me will come into effect [that] "I will surely fill Hell with jinn and people all together.
فَذُوقُوا۟ بِمَا نَسِيتُمْ لِقَآءَ يَوْمِكُمْ هَـٰذَآ إِنَّا نَسِينَـٰكُمْ ۖ وَذُوقُوا۟ عَذَابَ ٱلْخُلْدِ بِمَا كُنتُمْ تَعْمَلُونَ
So taste [punishment] because you forgot the meeting of this, your Day; indeed, We have [accordingly] forgotten you. And taste the punishment of eternity for what you used to do."
تَتَجَافَىٰ جُنُوبُهُمْ عَنِ ٱلْمَضَاجِعِ يَدْعُونَ رَبَّهُمْ خَوْفًا وَطَمَعًا وَمِمَّا رَزَقْنَـٰهُمْ يُنفِقُونَ
They arise from [their] beds; they supplicate their Lord in fear and aspiration, and from what We have provided them, they spend.
فَلَا تَعْلَمُ نَفْسٌ مَّآ أُخْفِىَ لَهُم مِّن قُرَّةِ أَعْيُنٍ جَزَآءًۢ بِمَا كَانُوا۟ يَعْمَلُونَ
And no soul knows what has been hidden for them of comfort for eyes as reward for what they used to do.