Sunan Abi Dawud Book 42, Hadith 67
The Messenger of Allah (ﷺ) said to al-Hasan ibn Ali. This son of mine is a Sayyid (chief), and I hope Allah may reconcile two parties of my community by means of him. Hammad's version has: And perhaps Allah may reconcile two large parties of Muslims by means of him.
When the Prophet (May peace be upon him) heard ‘Umar’s voice, Ibn Zam’ah said: The Prophet (May peace be upon him) came out until he took out his head of his apartment. He then said : No, no, no; the son of Abu Quhafah should lead the people in prayer. He said it angrily.
There is no one who will be overtaken by trial regarding whom I do not fear except Muhammad ibn Maslamah, for I heard the Messenger of Allah (ﷺ) say: Trial will not harm you.