I heard the Prophet (ﷺ) talking at the pulpit while Al-Hasan was sitting beside him, and he (i.e. the Prophet ) was once looking at the people and at another time Al-Hasan, and saying, "This son of mine is a Saiyid (i.e. chief) and perhaps Allah will bring about an agreement between two sects of the Muslims through him."
Reference: Sahih al-Bukhari 3746 In-book : Book 62, Hadith 93 USC-MSA web (English) : Vol. 5, Book 57, Hadith 89 (deprecated)
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