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.
bayhaqi:651Abū Bakr al-Qāḍī And ʾAbū Saʿīd b. Abū ʿAmr > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Muḥammad b. Isḥāq > Muḥammad b. ʿImrān from my father > Ibn Abū Laylá > ʿĪsá > ʿAbd al-Raḥman b. Abū Laylá

[Machine] We were with the Prophet ﷺ when Al-Hasan came and he started to play with him. The Prophet ﷺ lifted his shirt and kissed his belly button. This chain of narration is not strong and it does not indicate whether he touched him with his hand or not, and then he prayed without performing ablution.  

البيهقي:٦٥١وَأَمَّا الْحَدِيثُ الَّذِي 651 أنبأ أَبُو بَكْرٍ الْقَاضِي وَأَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو قَالَا نا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ ثنا مُحَمَّدُ بْنُ عِمْرَانَ حَدَّثَنِي أَبِي حَدَّثَنِي ابْنُ أَبِي لَيْلَى عَنْ عِيسَى عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى قَالَ

كُنَّا عِنْدَ النَّبِيِّ ﷺ فَجَاءَ الْحَسَنُ فَأَقْبَلَ يَتَمَرَّغُ عَلَيْهِ فَرَفَعَ عَنْ قَمِيصِهِ وَقَبَّلَ زَبِيبَتَهُ فَهَذَا إِسْنَادُهُ غَيْرُ قَوِيٍّ وَلَيْسَ فِيهِ أَنَّهُ مَسَّهُ بِيَدِهِ ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ