(2) باب فَضْلِ الْغُسْلِ يَوْمَ الْجُمُعَةِ، وَهَلْ عَلَى الصَّبِيِّ شُهُودُ يَوْمِ الْجُمُعَةِ أَوْ عَلَى النِّسَاءِ
Narrated Ibn `Umar:
While `Umar bin Al-Khattab was standing and delivering the sermon on a Friday, one of the companions of the Prophet, who was one of the foremost Muhajirs (emigrants) came. `Umar said to him, "What is the time now?" He replied, "I was busy and could not go back to my house till I heard the Adhan. I did not perform more than the ablution." Thereupon `Umar said to him, "Did you perform only the ablution although you know that Allah's Messenger (ﷺ) (p.b.u.h) used to order us to take a bath (on Fridays)?"
Reference: Sahih al-Bukhari 878
In-book reference: Book 11, Hadith 3
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 13, Hadith 3