Volume 2, Book 13, Number 21:
Narrated Abu Huraira:
Allah’s Apostle said “We are the last (to come amongst the nations) but (will be) the foremost on
the Day of Resurrection. They were given the Holy Scripture before us and we were given the Quran
after them. And this was the day (Friday) about which they differed and Allah gave us the guidance
(for that). So tomorrow (i.e. Saturday) is the Jews’ (day), and the day after tomorrow (i.e. Sunday) is
the Christians’.” The Prophet (p.b.u.h) remained silent (for a while) and then said, “It is obligatory for
every Muslim that he should take a bath once in seven days, when he should wash his head and
body.”
Narrated Abu Huraira through different narrators that the Prophet said, “It is Allah’s right on
every Muslim that he should take a bath (at least) once in seven days.”