Surah Fussilat, ayah 38

41:38

فَإِنِ ٱسۡتَكۡبَرُواْ فَٱلَّذِينَ عِندَ رَبِّكَ يُسَبِّحُونَ لَهُۥ بِٱلَّيۡلِ وَٱلنَّهَارِ وَهُمۡ لَا يَسۡـَٔمُونَ۩ ٣٨

Fa inistakbarū falladhīna 'inda rabbika yusabbihūna lahū billayli wan-nahāri wahum lā yas'amūn

But if they are arrogant - then those who are near your Lord [i.e., the angels] exalt Him by night and by day, and they do not become weary.