Sahih al-bukhari:6274 Chapter: How the Salam began Book 79, Hadith 48

Narrated Bishr: as above (No. 290) adding: The Prophet (ﷺ) was reclining (leaning) and then he sat up saying, “And I
warn you against giving a false statement.” And he kept on saying that warning so much so that we
said, “Would that he had stopped.”