Sunan Ibn Majah, Book 1, Hadith 46 (In-Book) ⓘ
It was narrated from 'Irbad bin Sariyah said: "The Messenger of Allah led us in Fajr (morning) prayer, then he turned to us and delivered an eloquent speech". And he mentioned something similar (as no.43)
حَدَّثَنَا يَحْيَى بْنُ حَكِيمٍ، حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ الصَّبَّاحِ الْمِسْمَعِيُّ، حَدَّثَنَا ثَوْرُ بْنُ يَزِيدَ، عَنْ خَالِدِ بْنِ مَعْدَانَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَمْرٍو، عَنِ الْعِرْبَاضِ بْنِ سَارِيَةَ، قَالَ صَلَّى بِنَا رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ صَلاَةَ الصُّبْحِ ثُمَّ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَوَعَظَنَا مَوْعِظَةً بَلِيغَةً . فَذَكَرَ نَحْوَهُ .
also referenced under: Hadith 44 (Reference) & Volume 1, Book 1, Hadith 44 (DarusSalam)