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:15:66 –

And We conveyed to him ˹the decree˺ of that matter: that those ˹sinners˺ would be eliminated by early morning.  

And We conveyed, We revealed, to him the matter, which was, that these ˹sinners˺ was to be eradicated by morning (musbihīn is a circumstantial qualifier,), in other words, their annihilation will take place in the morning.
القرآن:١٥:٦٦ –

وَقَضَيْنَا إِلَيْهِ ذَٰلِكَ الْأَمْرَ أَنَّ دَابِرَ هَٰؤُلَاءِ مَقْطُوعٌ مُصْبِحِينَ  

{وقضينا} أوحينا {إليه ذلك الأمر} وهو {أن دابر هؤلاء مقطوع مصبحين} حال أي يتم استئصالهم في الصباح.