صحيح البخاري
Sahih Bukhari
كتاب أحاديث الأنبياء
The Book of The Stories of The Prophets
بَابٌ:
(54) Chapter.
Hadith 3487
«عَلَى كُلِّ مُسْلِمٍ فِي كُلِّ سَبْعَةِ أَيَّامٍ يَوْمٌ يَغْسِلُ رَأْسَهُ وَجَسَدَهُ».
It is incumbent on every Muslim to wash his head and body on a Day (i.e. Friday) (at least) in every seven days."
