Narrated Abu Sa'eed:
that the Messenger of Allah (ﷺ) said: "Al-Hasan and Al-Husain are the chiefs of the youth of Paradise." (JA)
English reference (JA): Vol. 1, Book 46, Hadith 3768 (JA)
Arabic reference (JA): Book 49, Hadith 4136 (JA)