Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah
Narrated Abu Huraira (Radi-Allahu ‘anhu):
The
Prophet (Sallallahu ‘Alaihi Wa Sallam) said, “We are the last (to come)
but we will be the foremost on the Day of Resurrection, nations were
given the Book (i.e. Scripture) before us, and we were given the Holy
Book after them. This (i.e. Friday) is the day about which they
differed. So the next day (i.e. Saturday) was prescribed for the Jews
and the day after it (i.e. Sunday) for the Christians. It is incumbent
on every Muslim to wash his head and body on a Day (i.e. Friday) (at
least) in every seven days.”
Bukhari Vol. 4 : No. 693