They remember God* while standing, sitting, and on their sides, and they reflect upon the creation of the heavens and the earth: “Our Lord, You did not create all this in vain. Be You glorified. Save us from the retribution of Hell.
الَّذينَ يَذكُرونَ اللَّهَ قِيٰمًا وَقُعودًا وَعَلىٰ جُنوبِهِم وَيَتَفَكَّرونَ فى خَلقِ السَّمٰوٰتِ وَالأَرضِ رَبَّنا ما خَلَقتَ هٰذا بٰطِلًا سُبحٰنَكَ فَقِنا عَذابَ النّارِ
allazeena yazkuroonal laaha qiyaamanw-wa qu’oodanw-wa ‘alaa juno obihim wa yatafakkaroona fee khalqis samaawaati wal ardi Rabbanaa maa khalaqta haaza baatilan Subhaanaka faqinaa ‘azaaban Naar
*3:191 Your god is whoever or whatever occupies your mind most of the time. The true believers are those who remember God most of the time. See 23:84-89 and Appendix 27.