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:21:20 –

They exalt ˹Him˺ night and day ˹and˺ do not slacken.  

They glorify ˹Him˺ night and day, and they do not falter, in it, for it comes to them as ˹naturally as˺ breathing comes to us, ˹something˺ which we can never be distracted from.
القرآن:٢١:٢٠ –

يُسَبِّحُونَ اللَّيْلَ وَالنَّهَارَ لَا يَفْتُرُونَ  

{يسبحون الليل والنهار لا يفترون} عنه فهو منهم كالنفس منا لا يشغلنا عنه شاغل.