(2) باب فَضْلِ الْغُسْلِ يَوْمَ الْجُمُعَةِ، وَهَلْ عَلَى الصَّبِيِّ شُهُودُ يَوْمِ الْجُمُعَةِ أَوْ عَلَى النِّسَاءِ
Narrated `Abdullah bin `Umar:
Allah's Messenger (ﷺ) (p.b.u.h) said, "Anyone of you attending the Friday (prayers) should take a bath."
Reference: Sahih al-Bukhari 877
In-book reference: Book 11, Hadith 2
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 13, Hadith 2