It was narrated that Jabir said:
"The Messenger of Allah (ﷺ) said: 'Every Muslim man has to perform Ghusl one day in every seven, and that is on Friday.'" (AR)
App reference (AR): Book 14, Hadith 15 (AR)
English reference (AR): Vol. 2, Book 14, Hadith 1379 (AR)
Arabic reference (AR): Book 14, Hadith 1389 (AR)