"I saw the Messenger of Allah (ﷺ) on the Minbar, and Al-Hasan was with him. He would turn to the people sometimes and turn to him (Al-Hasan) sometimes, and he said: 'This son of mine is a leader (Sayyid) and Allah may make peace between two large groups of Muslims through him.'"
Sunan an-Nasa'i Book 14, Hadith 47