Muwatta Malik · #226
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّهُ كَانَ يَقُولُ غُسْلُ يَوْمِ الْجُمُعَةِ وَاجِبٌ عَلَى كُلِّ مُحْتَلِمٍ كَغُسْلِ الْجَنَابَةِ .
English
Yahya related to me from Malik from Said ibn Abi Said al-Maqburi that Abu Hurayra used to say, "Doing ghusl as prescribed for major ritual impurity is incumbent (wajib) on the day of jumua on every male who has reached puberty