Sunan an-Nasa'i 445
سنن النسائي#445SahihIt 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Isnaad
Al-AlbaniSahih Isnaad
Zubair Ali ZaiSahih
In-book reference: 4:51