If one were to make the halt in any of those places...
If one were to make the halt in any of those places, his Hajj is invalid by consensus of all the schools, with the exception of the Maliki, according to which one may halt at `Arnah though he will have to make a sacrifice. The entire area of 'Arafat is mawqif (permissible for the wuqaf) and one may make the halt at any spot within it by consensus of all schools.
Al‑'Imam al‑Sadiq (`a) relates that when the Prophet (s) made the halt at 'Arafat, the people crowded around him, rushing along on the hoof‑prints of his camel. Whenever the camel moved, they moved along with it. (When he saw this), the Prophet said, "O people, the mawqif is not confined to where my camel stands, rather this entire 'Arafat is mawqif," and pointed to the plains of 'Arafat.
"If the mawqif were limited to where my camel stands, the place would be too little for the people." (al‑Tadhkirah) The Conditions Applicable to the Halt Taharah (ritual purity) is not a condition for the halt at 'Arafat, by consensus of all the schools. According to the Imamiyyah and the Malik! schools, the halt at `Arafat must be made with prior intention (niyyah) and with the implied knowledge that the place where he is halting is indeed 'Arafat.
Thus if he were to pass on without knowing, or know without intending the wuquf it is not considered wuquf as such. According to the Shafi`i and the Maliki schools, neither intent nor knowledge is a condition. All that is required is freedom from insanity, intoxication, and loss of consciousness.
According to the Hanafis, neither intent, nor knowledge, nor sanity is a condition; whosoever is present in 'Arafat during the specific period, his Hajj is correct, intent or no intent, whether he knows the place or not, whether sane or insane. (Fiqh al‑Sunnah, al‑Tadhkirah) Is it necessary to make the halt in 'Arafat for the full specified period, or is it sufficient to be present there for some time, even if it is for a single moment?
According to the Imamiyyah, there are two kinds of periods for the halt, depending on whether one arrives at a time of his own choice (ikhtiyari) or the time is forced upon him by circumstances beyond his control (idtirari). In the case of the former, the period of halt for him is from midday on the ninth until sunset on the same day; in the case of the latter, the period lasts until the daybreak of the tenth.