Sunan Ibn Majah, Book 24, Hadith 2874 (In-Book) ⓘ
It was narrated from ‘Uqbah bin ‘Amir Al-Juhani that the Messenger of Allah said: “May Allah have mercy on the one who keeps watch over the troops.”
حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، أَنْبَأَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ، عَنْ صَالِحِ بْنِ مُحَمَّدِ بْنِ زَائِدَةَ، عَنْ عُمَرَ بْنِ عَبْدِ الْعَزِيزِ، عَنْ عُقْبَةَ بْنِ عَامِرٍ الْجُهَنِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " رَحِمَ اللَّهُ حَارِسَ الْحَرَسِ " .
also referenced under: Hadith 2769 (Reference) & Volume 4, Book 24, Hadith 2769 (DarusSalam)