It was narrated that Jabir bin Samurah said:
"I sat with the Prophet (ﷺ) and I did not see him deliver the khutbah except standing, and he sat, then he stood up and delivered the second khutbah." (ES)
App reference (ES): Book 14, Hadith 52 (ES)
English reference (ES): Vol. 2, Book 14, Hadith 1416 (ES)
Arabic reference (ES): Book 14, Hadith 1426 (ES)