Abu Bakra reported,

I saw the Messenger of Allah ﷺ on the pulpit with Hasan bin Ali beside him. He would turn to face the people once and turn to face Hasan another time, saying, "This son of mine is a master, and perhaps Allah will reconcile through him two great factions of the Muslims."

Azami 9723

Sahih

عن أبي بكرة يقول

رأيت رسول الله ﷺ على المنبر، والحسن بن علي إلى جنبه، وهو يقبل على الناس مرة، وعليه أخرى ويقول: إن ابني هذا سيد، ولعل الله أن يصلح به بين فئتين عظيمتين من المسلمين.

الأعظمي 9723صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Biography of the Prophet ﷺ
Chapter
What came true of his prophecies
Section
Reconciliation between Hasan bin Ali and Muawiya
Numbering
Jami al-Kamil 9723 (2nd edition)
Azami 9723