Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:23:87 –

They will say, "˹They belong˺ to Allah." Say, "Then will you not fear Him?"  

They will say, ‘God’. Say: ‘Will you not then be God-fearing?’, will you then ˹not˺ be wary of worshipping ˹things˺ other than Him?
القرآن:٢٣:٨٧ –

سَيَقُولُونَ لِلَّهِ ۚ قُلْ أَفَلَا تَتَّقُونَ  

{سيقولون الله قل أفلا تتقون} تحذرون عبادة غيره.

See similar narrations below:

Collected by Qurʾān
quran:23:85 –

They will say, "To Allah." Say, "Then will you not remember?"  

They will say, ‘To God’. Say, to them: ‘Will you not then remember?’ (tadhakkarūna, the second tā’ ˹of tatadhakkarūna˺ has been assimilated with the dhāl) will you ˹not then˺ be admonished and so realise that the One Who has the power to originate creation also has the power to resurrect after death?
القرآن:٢٣:٨٥ –

سَيَقُولُونَ لِلَّهِ ۚ قُلْ أَفَلَا تَذَكَّرُونَ  

{سيقولون لله قل} لهم {أفلا تذَّكرون} بإدغام التاء الثانية في الذال تتعظون فتعلمون أن القادر على الخلق ابتداء قادر على الإحياء بعد الموت.
quran:37:138 –

And at night. Then will you not use reason?  

and at night: will you, O people of Mecca, not then understand?, what befell them and so take heed therefrom?
القرآن:٣٧:١٣٨ –

وَبِاللَّيْلِ ۗ أَفَلَا تَعْقِلُونَ  

{وبالليل أفلا تعقلون} يا أهل مكة ما حل بهم فتعتبرون به.