Jami` at-Tirmidhi 106
جامع الترمذي#106Da'ifAbu Hurairah narrated that :the Prophet said: "Under every hair is sexual impurity so wash (all of) the hair and cleanse the skin
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 1:106