73:8
وَٱذْكُرِ ٱسْمَ رَبِّكَ وَتَبَتَّلْ إِلَيْهِ تَبْتِيلًا
wa-udh'kuri is'ma rabbika watabattal ilayhi tabtīlan
so celebrate the name of your Lord and devote yourself wholeheart-edly to Him.
And remember the Name of your Lord and devote yourself to Him with a complete devotion.