Quran 41:38 from Surah Fussilat on Divine Marvels.
فَإِنِ ٱسۡتَكۡبَرُواْ فَٱلَّذِينَ عِندَ رَبِّكَ يُسَبِّحُونَ لَهُۥ بِٱلَّيۡلِ وَٱلنَّهَارِ وَهُمۡ لَا يَسۡـَٔمُونَ۩
English translation: But if they are arrogant then those who (are) near your Lord glorify Him by night and day And they (do) not tire
Transliteration: fa-ini is'takbaru fa-alladhina inda rabbika yusabbihuna lahu bi-al-layli wal-nahari wahum la yasamuna