(37) باب فَضْلِ صَلاَتَىِ الصُّبْحِ وَالْعَصْرِ وَالْمُحَافَظَةِ عَلَيْهِمَا
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
Angels take turns among you by night and by day, and the rest of the hadith is the same.
Reference: Sahih Muslim 632 b
In-book reference: Book 5, Hadith 269
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1321