Fussilat • EN-TAFSIR-IBN-ABBAS
﴿ فَإِنِ ٱسْتَكْبَرُوا۟ فَٱلَّذِينَ عِندَ رَبِّكَ يُسَبِّحُونَ لَهُۥ بِٱلَّيْلِ وَٱلنَّهَارِ وَهُمْ لَا يَسْـَٔمُونَ ۩ ﴾
“And though some be too proud [to listen to this call], they who [in their hearts] are with thy Sustainer extol His limitless glory by night and by day, and never grow weary [thereof].”
(But if they are too proud) to accept faith and worship Allah alone (still those who are with thy Lord) i.e. the angels (glorify Him) i.e. pray to Allah (night and day, and tire not) be not not bored of worshipping Allah.