73:8

Al-Muzzammil 73:8

وَٱذْكُرِ ٱسْمَ رَبِّكَ وَتَبَتَّلْ إِلَيْهِ تَبْتِيلًۭا

Wazkuris ma rabbika wa tabattal ilaihi tabteelaa

So remember the name of your Lord and devote yourself to Him with exclusive devotion.