Sahih al-Bukhari 898
Sahih al-Bukhari · Book 11: Friday Prayer · Is the bath necessary for those who do not present themselves for the Jumu'ah prayer
رَوَاهُ أَبَانُ بْنُ صَالِحٍ عَنْ مُجَاهِدٍ ، عَنْ طَاوُسٍ ، عَنْ أَبِي هُرَيْرَةَ ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " لِلَّهِ تَعَالَى عَلَى كُلِّ مُسْلِمٍ حَقٌّ أَنْ يَغْتَسِلَ فِي كُلِّ سَبْعَةِ أَيَّامٍ يَوْمًا ".
Narrated Abu Huraira through different narrators that the Prophet (ﷺ) said, "It is Allah's right on every Muslim that he should take a bath (at least) once in seven days."