Quran 73:8 from Surah Al-Muzzammil on Divine Marvels.
وَٱذۡكُرِ ٱسۡمَ رَبِّكَ وَتَبَتَّلۡ إِلَيۡهِ تَبۡتِيلٗا
English translation: And remember (the) name (of) your Lord and devote yourself to Him (with) devotion
Transliteration: wa-udh'kuri is'ma rabbika watabattal ilayhi tabtilan