Al-Adab Al-Mufrad · Book 5 · Hadith 86
حَدَّثَنَا أَبُو الْوَلِيدِ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ عَدِيِّ بْنِ ثَابِتٍ قَالَ: سَمِعْتُ الْبَرَاءَ يَقُولُ: رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم وَالْحَسَنُ صَلَوَاتُ اللهِ عَلَيْهِ عَلَى عَاتِقِهِ، وَهُوَ يَقُولُ: اللَّهُمَّ، إِنِّي أُحِبُّهُ فَأَحِبَّهُ.
Al-Bara' said, "I saw the Prophet, may Allah bless him and grant him peace, when al-Hasan was on his shoulder. He was saying, 'O Allah, I love him, so love him.'"
Sahih