Sunan Ibn Majah, Volume 2, Book 5, Hadith 1107 (DarusSalam) ⓘ

‘Abdur-Rahman bin Sa’d bin ‘Ammar bin Sa’d narrated that his father told him, from his father, from his grandfather, that when the Messenger of Allah delivered a speech on the battlefield he would do so leaning on a bow, and when he delivered a sermon on Friday, he would do so leaning on his staff.

حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ سَعْدِ بْنِ عَمَّارِ بْنِ سَعْدٍ، حَدَّثَنِي أَبِي، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ كَانَ إِذَا خَطَبَ فِي الْحَرْبِ خَطَبَ عَلَى قَوْسٍ وَإِذَا خَطَبَ فِي الْجُمُعَةِ خَطَبَ عَلَى عَصًا ‏.‏