Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:8105Muḥammad b. ʿAbdullāh b. al-Mubārak > Abū Dāwud > Sufyān > ʿUmar b. Saʿīd > Ibn Abū Mulaykah > ʿUqbah b. al-Ḥārith

[Machine] "I was with Abu Bakr when he passed by Al-Hasan and placed his hand on his neck, then he said, 'By my father, he resembles the Prophet ﷺ. There is no one who resembles Ali except Ali himself,' and he started laughing."  

الكبرى للنسائي:٨١٠٥أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ الْمُبَارَكِ قَالَ حَدَّثَنَا أَبُو دَاوُدَ عَنْ سُفْيَانَ عَنْ عُمَرَ بْنِ سَعِيدٍ عَنِ ابْنِ أَبِي مُلَيْكَةَ عَنْ عُقْبَةَ بْنِ الْحَارِثٍ قَالَ

إِنِّي مَعَ أَبِي بَكْرٍ حِينَ مَرَّ عَلَى الْحَسَنِ فَوَضَعَهُ عَلَى عُنُقِهِ ثُمَّ قَالَ بِأَبِي شَبِيهُ النَّبِيِّ ﷺ لَا شَبْهَ عَلِيٍّ وَعَلِيٌّ مَعَهُ فَجَعَلَ يَضْحَكُ