[Machine] The Messenger of Allah ﷺ used to deliver the Friday sermon while standing. So, whoever told you that he sat, then consider it false. Jabir said, the Messenger of Allah ﷺ would deliver two sermons. He would deliver the first sermon, then sit, then stand again to deliver the second sermon. The sermon of the Messenger of Allah ﷺ and his prayer were separate.
كَانَ رَسُولُ اللهِ ﷺ يَخْطُبُ يَوْمَ الْجُمُعَةِ قَائِمًا فَمَنْ حَدَّثَكَ أَنَّهُ جَلَسَ فَكَذِّبْهُ قَالَ وَقَالَ جَابِرٌ كَانَ رَسُولُ اللهِ ﷺ يَخْطُبُ خُطْبَتَيْنِ يَخْطُبُ ثُمَّ يَجْلِسُ ثُمَّ يَقُومُ فَيَخْطُبُ وَكَانَتْ خُطْبَةُ رَسُولِ اللهِ ﷺ وَصَلَاتُهُ قَصْدًا