Bismillahirrahmanirrahim
Abu Saeed khazri Radiallahu anhu se rivayat hai ki Rasoollallah Sallallahu Alaihi Wasallam ne farmaya har Baaligh par Jumaa ke din gusl wajib hai
Sahih Bukhari, Vol 4, 2665
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Narrated Abu Said Al-Khudri Radiallahu anhu: The Prophet Sallallahu Alaihi Wasallam said, "Bath on Friday is compulsory for those who have attained the age of puberty."
Sahih Bukhari, Vol 3, Book 48, No. 833: