With regard to those who come for Hajj from outside Makkah, travelling from other regions of the Kingdom or from outside, they shorten the prayers without putting them together on the eighth day (of Dhu’l-Hijjah), and they shorten them and put them together on the ninth day, but what about the Day of Sacrifice and the days of at-Tashreeq?

Praise
be to Allah

With regard to
the pilgrim who comes from outside Makkah, his prayers on the Day of
Sacrifice and on the days of at-Tashreeq are no different to his prayers on
the Day of at-Tarwiyah (the eighth of Dhu’l-Hijjah), the day of ‘Arafah and
the night of Muzdalifah, with regard to shortening the prayer.

He should
shorten his prayers on all of these days, so he should pray the four-rak‘ah
prayers (Zuhr, ‘Asr and ‘Isha’) with two rak‘ahs. This was the practice of
the Messenger (blessings and peace of Allah be upon him).

Shaykh Ibn Baaz
(may Allah have mercy on him) said:

The Sunnah
[i.e., for the pilgrims in Mina] is to offer every prayer on time,
shortening the prayer but not putting prayers together, except that Maghrib
and Fajr cannot be shortened. … Because the Prophet (blessings and peace of
Allah be upon him) led the people in prayer in Mina, ‘Arafah and Muzdalifah,
shortening the prayers.

End quote from
Majmoo‘ Fataawa ash-Shaykh Ibn Baaz (16/67-86)

Shaykh ‘Abd al-‘Azeez
ibn Baaz (may Allah have mercy on him) was asked: What is the ruling on
putting prayers together for the traveller in Mina? There are some people
who put the prayers together all the time when travelling, whether they are
on the move or halting, so they put the prayers together in Mina on the day
of at-Tarwiyah and on the days of at-tashreeq, on the grounds that they are
travelling. Please advise us, may Allah reward you, on how the prayers are
to be offered at these times.

He replied:

In Mina the
Sunnah is to shorten the prayers without putting them together. The Prophet
(blessings and peace of Allah be upon him) shortened the prayers without
putting them together in Mina, because he had reached a destination and
halted, and was at ease. The Sunnah is to shorten the prayers but not to put
them together.

This is how the
traveller should do it. When he reaches a destination and halts, and is at
ease, it is preferable for him to shorten the prayers without putting them
together, but if he does put them together, there is nothing wrong with
that. The Prophet (blessings and peace of Allah be upon him) prayed in
Tabook, where he had halted, and put the prayers together. Both matters were
narrated from him (blessings and peace of Allah be upon him). He shortened
the prayers without putting them together in Mina during the Farewell Hajj
at the end of his life, and he only lived three months after that. He would
pray two rak‘ahs in Mina without putting the prayers together; he prayed
Zuhr on its own, ‘Asr on its own, Maghrib on its own, and ‘Isha’ on its own.
This is the Sunnah during the days of Hajj, following his example (blessings
and peace of Allah be upon him), because he said: “Learn from me your
rituals (of Hajj).” And Allah, may He be exalted, said:
Indeed
in the Messenger of Allah (Muhammad (blessings and peace of Allah be upon
him)) you have a good example to follow”
[al-Ahzaab 33:21]
.

End quote from
Majmoo‘ Fataawa ash-Shaykh Ibn Baaz (30/210-211)

With regard to
the residents of Makkah now, in fatwa no. 109238 we
stated that they should shorten their prayers in ‘Arafah and Muzdalifah, and
offer them in full in Mina, because Makkah has expanded and Mina has become
as if it is one of the neighbourhoods of Makkah.

And Allah knows
best.