Hadith 364
كان يغتسل من اربع؛ من الجنابة و يوم الجمعة و من الحجامة و غسل الميت
"The Prophet (peace and blessings be upon him) used to perform ghusl for four reasons: for Jumu'ah (Friday prayer), after sexual impurity (janabah), after cupping (hijama), and after washing a deceased person."