وَٱذْكُر رَّبَّكَ فِى نَفْسِكَ تَضَرُّعًا وَخِيفَةً وَدُونَ ٱلْجَهْرِ مِنَ ٱلْقَوْلِ بِٱلْغُدُوِّ وَٱلْـَٔاصَالِ وَلَا تَكُن مِّنَ ٱلْغَـٰفِلِينَ
Wa o th kur rabbaka fee nafsika ta d arruAAan wakheefatan wadoona aljahri mina alqawli bi a lghuduwwi wa a l asa li wal a takun mina algh a fileen a And bethink thyself of thy Sustainer humbly and with awe, and without raising thy voice, at morn and at evening; and do not allow thyself to be heedless.
 - Mohammad Asad
Bring your Rabb to remembrance deep in your soul with humility and in reverence without raising your voice, both in the mornings and in the evenings; and be not of those who are heedless.
 - Muhammad Farooq-i-Azam Malik
Remember your Lord inwardly with humility and reverence and in a moderate tone of voice, both morning and evening. And do not be one of the heedless.
 - Mustafa Khattab
And do thou [O Muhammad) remember thy Lord within thyself humbly and with awe, below thy breath, at morn and evening. And be thou not of the neglectful.
 - Marmaduke Pickthall
And do thou (O reader!) bring thy Lord to remembrance in thy (very) soul with humility and in reverence without loudness in words in the mornings and evenings; and be not thou of those who are unheedful.
 - Abdullah Yusuf Ali