بُلُوغُ الْمَرَامِ
Bulugh al-Maram 474
The Book of Prayer
وَعَنِ اَلْحَكَمِ بْنِ حَزْنٍ - رضى الله عنه - قَالَ: { شَهِدْنَا الْجُمُعَةَ مَعَ اَلنَّبِيِّ - صلى الله عليه وسلم -فَقَامَ مُتَوَكِّئًا عَلَى عَصًا أَوْ قَوْسٍ } رَوَاهُ أَبُو دَاوُد َ [1] .
Narrated al-Hakam bin Hazn (RA): We attended the Friday prayer with the Prophet (ﷺ) and he (ﷺ) stood leaning on a staff or a bow. [Reported by Abu Dawud].
Sunnah.com reference: Book 2, Hadith 398