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:21:42 –

Say, "Who can protect you at night or by day from the Most Merciful?" But they are, from the remembrance of their Lord, turning away.  

Say, to them: ‘Who can guard you, preserve you, by night and day from the Compassionate One?’, from His chastisement, if it should befall you? In other words, no one can do such a thing. Those being addressed ˹here˺ do not fear God’s chastisement because they deny ˹the truth of˺ it. Nay, but of the Remembrance of their Lord, that is, the Qur’ān, they are disregardful, failing to reflect on it.
القرآن:٢١:٤٢ –

قُلْ مَنْ يَكْلَؤُكُمْ بِاللَّيْلِ وَالنَّهَارِ مِنَ الرَّحْمَٰنِ ۗ بَلْ هُمْ عَنْ ذِكْرِ رَبِّهِمْ مُعْرِضُونَ  

{قل} لهم {من يكلؤكم} يحفظكم {بالليل والنهار من الرحمن} من عذابه إن نزل بكم، أي: لا أحد يفعل ذلك، والمخاطبون لا يخافون عذاب الله لإنكارهم له {بل هم عن ذكر ربهم} أي القرآن {معرضون} لا يتفكرون فيه.