مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 538
Purification
Washing as Established by the Sunna - Section 1
وَعَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «غُسْلُ يَوْمِ الْجُمُعَةِ وَاجِبٌ عَلَى كُلِّ مُحْتَلِمٍ»
Abu Sa'id reported God’s messenger as saying, “Bathing on Friday is obligatory on everyone who has reached puberty.” (Bukhari and Muslim.)
Mishkat al-Masabih, 538مُتَّفَقٌ عَلَيْهِ (الألباني)