Sunan Ibn Majah 658
سنن ابن ماجه#658Sahihحَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ حَمَّادِ بْنِ سَلَمَةَ، عَنْ مُحَمَّدِ بْنِ زِيَادٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ رَأَيْتُ النَّبِيَّ ـ صلى الله عليه وسلم ـ حَامِلَ الْحُسَيْنِ بْنِ عَلِيٍّ عَلَى عَاتِقِهِ وَلُعَابُهُ يَسِيلُ عَلَيْهِ .
It was narrated that Abu Hurairah said:"I saw the Prophet carrying Hasan bin 'Ali on his shoulder, and his saliva was dripping down on him
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 1:392