All the four schools are in consensus that if one does not...

All the four schools are in consensus that if one does not perform the ramy at all until the days of Tashriq are past, he is not obliged to perform the rite later any time. But they disagree as to the related kaffarah, which, according to the Malikis is sacrifice regardless of some‑‑even one‑‑or all of the pebbles being omitted; according to the Hanafis the sacrifice is required for omitting all, and for fewer one must feed a poor man for every pebble omitted.

The kaffarah according to Shafi'is is a mudd of food for every pebble if two are omitted; for three a sacrifice becomes obligatory.

(Ibn Rushd's Bidayah, al‑Mughni) The Imamiyyah say, if the ramy of one or more jimar is forgotten, the rite must be performed during the days of Tashriq; but if forgotten altogether until one reaches Makkah, the pilgrim is obliged to return to Mina to perform them if the days of Tashriq are not past; otherwise he must perform the rite himself the following year, or depute another to perform it; in any case there is no kaffarah upon him.

(al‑Tadhkirah) This agrees with the fatawa of al‑Sayyid al‑Hakim and al‑Sayyid al‑Khu'i, with the difference that the former regards the legal grounds in favour of the obligation of completion of the rite as stronger (aqwa), whereas the latter considers it as dictated by caution (ahwat), and both agree that intentional omission of ramy does not invalidate the Hajj.

We referred earlier to the consensus of all the schools that it is sufficient for the Hajj pilgrim to remain for only two days of Tashriq in Mina and that he may depart before the sunset on 12th; if he remains until sunset, it is obligatory upon him to stay overnight and perform the rite of ramy on the 13th.

The Imdmiyyah, however, say that the permissibility of leaving on the 12th is only for one who has not violated the prohibition on hunting and sex in the state of ihram; otherwise he is obliged to remain in Mina on the night of the 13th. Offering salat in the Masjid al‑Khayf at Mina is mustahabb, so also on the hill called Khayf.

(al‑Tadhkirah) On returning to Makkah after the rites of Mina, it is, according to Imamis and Malikis, mustahabb to perform the tawaf al‑wada; which, according to Hanafis and Hanbal is, is wajib for non‑Makkans and those who do not wish to stay on in Makkah after returning from Mina.