ٱلَّذِينَ يَذْكُرُونَ ٱللَّهَ قِيَٰمًۭا وَقُعُودًۭا وَعَلَىٰ جُنُوبِهِمْ وَيَتَفَكَّرُونَ فِى خَلْقِ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ رَبَّنَا مَا خَلَقْتَ هَٰذَا بَٰطِلًۭا سُبْحَٰنَكَ فَقِنَا عَذَابَ ٱلنَّارِ
Who remember Allah while standing or sitting or [lying] on their sides and give thought to the creation of the heavens and the earth, [saying], "Our Lord, You did not create this aimlessly; exalted are You [above such a thing]; then protect us from the punishment of the Fire.
Verily, in the creation of the heavens and the Earth, and in the alternation of night and day, there are indeed signs for men of understanding (190)Those who remember Allah standing, sitting, and lying down on their sides, and think deeply about the creation of the heavens and the earth, (saying): "Our Lord! You have not created this without purpose, glory to You! Give us salvation from the torment of the Fire (191)"Our Lord! Verily, whom You admit to the Fire, indeed, You have disgraced him; and never will the wrongdoers find any helpers (192)"Our Lord! Verily, we have heard the call of one calling to faith: 'Believe in your Lord,' and we have believed. Our Lord! Forgive us our sins and expiate from us our evil deeds, and make us die along with Al-Abrar (the most righteous)(193)"Our Lord! Grant us what You promised us through Your Messengers and disgrace us not on the Day of Resurrection, for You never break (Your) Promise. (194)
The Proofs of Tawhid for People of Understanding, their Characteristics, Speech, and Supplications
Allah said,
إِنَّ فِي خَلْقِ السَّمَاوَاتِ وَالْأَرْضِ
(Verily, in the creation of the heavens and the Earth,)[3:190], referring to the sky in its height and spaciousness, the earth in its expanse and density, the tremendous features they have of rotating planets, seas, mountains, deserts, trees, plants, fruits, animals, metals and various beneficial colors, scents, tastes and elements.
وَاخْتِلَافِ اللَّيْلِ وَالنَّهَارِ
(And in the alternation of night and day), as one follows and takes from the length of the other. For instance, at times one of them becomes longer than the other, shorter than the other at times and equal to the other at other times, and the same is repeated again and again, and all this occurs by the decision of the Almighty, Most Wise. This is why Allah said,
لَآيَاتٍ لِّأُولِي الْأَلْبَابِ
(there are indeed signs for men of understanding), referring to the intelligent and sound minds that contemplate about the true reality of things, unlike the deaf and mute who do not have sound comprehension. Allah said about the latter type,
وَكَأَيِّن مِّنْ آيَةٍ فِي السَّمَاوَاتِ وَالْأَرْضِ يَمُرُّونَ عَلَيْهَا وَهُمْ عَنْهَا مُعْرِضُونَ - وَمَا يُؤْمِنُ أَكْثَرُهُم بِاللَّهِ إِلَّا وَهُم مُّشْرِكُونَ
(And how many a sign in the heavens and the earth they pass by, while they are averse therefrom. And most of them believe not in Allah except that they attribute partners unto Him)[12:105-106].
Allah then describes those who have good minds,
الَّذِينَ يَذْكُرُونَ اللَّهَ قِيَامًا وَقُعُودًا وَعَلَىٰ جُنُوبِهِمْ
(Those who remember Allah standing, sitting, and lying down on their sides)[3:191].
Al-Bukhari recorded that 'Imran bin Husayn said that, the Messenger of Allah ﷺ said,
صَلِّ قَائِمًا، فَإِنْ لَمْ تَسْتَطِعْ فَقَاعِدًا، فَإِنْ لَمْ تَسْتَطِعْ فَعَلَى جَنْبٍ
(Pray while standing, and if you can't, pray while sitting, and if you cannot do even that, then pray lying on your side.) These people remember Allah in all situations, in their heart and speech,
وَيَتَفَكَّرُونَ فِي خَلْقِ السَّمَاوَاتِ وَالْأَرْضِ
(and think deeply about the creation of the heavens and the Earth), contemplating …