(Fuswilath) 41 : 38
فَإِنِ اسْتَكْبَرُوا فَالَّذِينَ عِنْدَ رَبِّكَ يُسَبِّحُونَ لَهُ بِاللَّيْلِ وَالنَّهَارِ وَهُمْ لَا يَسْأَمُونَ ۩
Then if they are acting arrogant, then those who are near their Lord are glorifying Him in night and day, and they never grow weary.
This is one of the fifteen verses where Prostration of Recitation is compulsory as explained in verses 7: 205-206. Prostration can be done either after reciting verse 37 or after reciting verse 38. Since it is told ‘if you are serving Him alone’, those who are not doing Prostration of Recitation are arrogant and are serving Satan and are the inmates of Hell with him. See explanation 36: 59-62; 38: 24, 82-83.