Hadith 669:3
Yazid narrated to us, he said: Isma'il—meaning Ibn Khalid—informed us, he said: Abu Juhayfah narrated to me, "That he saw the Messenger of Allah, may Allah bless him and grant him peace, and the person who most resembled him was Al-Hasan ibn Ali."
حدثنا يزيد، أخبرنا إسماعيل يعني ابن خالد، حدثني أبو جحيفة، " أنه رأى رسول الله صلى الله عليه وسلم وكان أشبه الناس به الحسن بن علي "