(30) باب الْوُضُوءِ مِنْ مَسِّ الذَّكَرِ
It was narrated from Busrah bint Safwan that the Prophet (ﷺ) said:
"If any one of you touches his private part with his hand, let him perform Wudu'."
Reference: Sunan an-Nasa'i 445
In-book reference: Book 4, Hadith 51
English translation: Vol. 1, Book 4, Hadith 446