Some pilgrims camp outside the boundaries
of 'Arafat and remain there until the sun has set; then they
depart for Muzdalifah without standing at 'Arafat properly.
This is a serious error which invalidates their hajj since
standing in Arafat is the essence of haji, and it is
obligatory to be within its boundaries and not outside them,
if it is not easy to do that, they may enter before sunset
and remain there until sunset. it is quite acceptable to
stand in Arafat during the night of sacrifice in particular.
Departing from 'Arafat before the sun has set is not
permissible, because the messenger of Allah (peace be on
him) stayed at 'Arafat until the sun had set completely.
Struggling through crowds in order to climb Mount 'Arafat is
not permissible, because it causes much harm and injury to
others. The entire Plain of 'Arafat is a place of standing,
and neither climbing Mount 'Arafat nor making salah there
has been recommended.
Making supplications facing Mount 'Arafat is incorrect
because the sunnah is to face qiblah while making
Making heaps of earth or pebbles: during the day of 'Arafat,
at particular places, by some people, has no bases in the
Shariah of Allah.