صَحِيحُ مُسْلِمٍ
Sahih Muslim 846 a
The Book of Prayer - Friday
Ghusl on Friday is obligatory for all adult men, and clarifying what they were ordered regarding it
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ صَفْوَانَ بْنِ سُلَيْمٍ، عَنْ عَطَاءِ، بْنِ يَسَارٍ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ الْغُسْلُ يَوْمَ الْجُمُعَةِ وَاجِبٌ عَلَى كُلِّ مُحْتَلِمٍ .
Sa'id al-Khudri reported Allah's Messenger (ﷺ) as saying: Taking a bath on Friday is essential for every adult person.
Sahih Muslim, 846 aSahihصحيح