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." (ID)
App reference (ID): Book 14, Hadith 52 (ID)
English reference (ID): Vol. 2, Book 14, Hadith 1416 (ID)
Arabic reference (ID): Book 14, Hadith 1426 (ID)