Sunan an-Nasa'i 1584
سنن النسائي#1584Hasanأَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ سِمَاكٍ، عَنْ جَابِرِ بْنِ سَمُرَةَ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم يَخْطُبُ قَائِمًا ثُمَّ يَجْلِسُ ثُمَّ يَقُومُ وَيَقْرَأُ آيَاتٍ وَيَذْكُرُ اللَّهَ وَكَانَتْ خُطْبَتُهُ قَصْدًا وَصَلاَتُهُ قَصْدًا .
It was narrated that Jabir bin Samurah said:"The Prophet (ﷺ) used to deliver the Khutbah standing, then he would sit down, then he would stand up and recite some verses and remember Allah (SWT). And his Khutbah was moderate in length, and his prayer was moderate in length
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 19:29