And remember the name of your Lord and devote yourself to Him with [complete] devotion.
The Saheeh International Quran Translation
وَٱذْكُرِ ٱسْمَ رَبِّكَ وَتَبَتَّلْ إِلَيْهِ تَبْتِيلًاAnd remember the name of your Lord and devote yourself to Him with [complete] devotion.