Musnad Ahmad 40
Uqbah bin al-Harith said:
I went out with Abu Bakr following 'Asr prayer a few days after the death of the Prophet (ﷺ), and ‘Ali was walking beside him. He passed by al-Hasan bin ‘Ali who was playing with some boys. Abu Bakr carried him on his shoulder, saying: May my father be sacrificed for him, the one who looks like the Prophet (ﷺ) and does not look like 'Ali. He said: And ‘Ali smiled
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، حَدَّثَنَا عُمَرُ بْنُ سَعِيدٍ، عَنِ ابْنِ أَبِي مُلَيْكَةَ، أَخْبَرَنِي عُقْبَةُ بْنُ الْحَارِثِ، قَالَ خَرَجْتُ مَعَ أَبِي بَكْرٍ الصِّدِّيقِ رَضِيَ اللَّهُ عَنْهُ مِنْ صَلَاةِ الْعَصْرِ بَعْدَ وَفَاةِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِلَيَالٍ وَعَلِيٌّ عَلَيْهِ السَّلَام يَمْشِي إِلَى جَنْبِهِ فَمَرَّ بِحَسَنِ بْنِ عَلِيٍّ يَلْعَبُ مَعَ غِلْمَانٍ فَاحْتَمَلَهُ عَلَى رَقَبَتِهِ وَهُوَ يَقُولُ وَا بِأَبِي شَبَهُ النَّبِيِّ لَيْسَ شَبِيهًا بِعَلِيِّ قَالَ وَعَلِيٌّ يَضْحَكُ‏.‏