"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."
Sunan an-Nasa'i Book 14, Hadith 52
← Previous Hadith "The Messenger of Allah (ﷺ) used to recite a great deal of remembrance, engage little in idle talk, make the prayer long and keep the khutbah short, and he would not refrain from walking with a widow or poor person and tending to their needs."

Sunan an-Nasa'i Book 14, Hadith 51 Next Hadith → The Messenger of Allah (ﷺ) used to deliver two khutbahs standing, and he would separate them by sitting.

Sunan an-Nasa'i Book 14, Hadith 53