I saw the Prophet ﷺ carrying Al-Hasan on his shoulder an saying, "O Allah! I love him, so please love him."  

رَأَيْتُ النَّبِيَّ ﷺ وَالْحَسَنُ عَلَى عَاتِقِهِ يَقُولُ اللَّهُمَّ إِنِّي أُحِبُّهُ فَأَحِبَّهُ