2.  Narrated 'Abdullah bin 'Umar: (While we were going for
the Battle of Tabuk and when we reached the places of the
dwellers of Al-Hijr), Allah's Apostle said about the dwellers
of Al-Hijr (to us). "Do not enter (the dwelling places) of
these people unless you enter weeping, but if you weep not,
then do not enter upon them, lest you be afflicted with
what they were afflicted with."
(Sahih Al-Bukhari, Volume 6, Book 60, Number 225)