وَاذْكُرِ اسْمَ رَبِّكَ وَتَبَتَّلْ إِلَيْهِ تَبْتِيلًا (8)
(73:8) So remember the name of your Lord *9 and devote yourself to Him with exclusive devotion.
*9) After making mention of the occupation of the daytime, the exhortation to "remember the name of your Lord" by itself gives the meaning: "Never be heedless of the remembrance of your Lord even when you are deeply involved in your worldly occupations, and continue. to commemorate His name in one way or another at all times." (For explanation, see E.N. 63 of Surah AI-Ahzab).