The Book of Purification and its Sunnah
1/135. Chapter:
Saliva that gets on clothes
Sunan Ibn Majah
حَدَّثَنَا 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."
Reference : Sunan Ibn Majah 658In-book reference : Book 1, Hadith 392English translation : Vol. 1, Book 1, Hadith 658