After entering ihram he should keep his tongue busy with the talbiyah: he proclaims it at the very moment he binds himself to ihram, then repeats it periodically, raising his voice with it until he casts the pebbles at the Jamrah of al-ʿAqabah on the Day of Sacrifice.
On the Day of Tarwiyah, whoever is in Mecca in a state of ihram heads for Mina. It is preferable to leave before the sun reaches its zenith so that he may perform the Zuhr prayer there, followed by the remaining prayers up to Fajr, and spend the night of the ninth in Mina. Jabir (may Allah be pleased with him) said: “The Prophet ﷺ rode to Mina where he prayed Zuhr, ʿAsr, Maghrib, ʿIshaʾ and Fajr, then stayed a short while until the sun had risen.” Doing this is sunnah, not obligatory, and likewise assuming ihram on the Day of Tarwiyah itself is not compulsory; if someone assumed ihram for Hajj before or after that day, it is still valid.
Accordingly, spending the night of the ninth in Mina and performing the five daily prayers there is recommended but not mandatory.
On the morning of the ninth, after sunrise, the pilgrims proceed from Mina to ʿArafah. All of ʿArafah is a valid standing place except the valley of ʿUrnah. Wherever a pilgrim stands within the confines of ʿArafah, his standing is sound—apart from the area the Prophet ﷺ excluded, namely the valley of ʿUrnah. The boundaries of ʿArafah have been clearly demarcated with markers and signs distinguishing it from the land beyond. Whoever is inside those limits is within ʿArafah; whoever is outside them is feared to be outside. The pilgrim must therefore make certain of his location and familiarize himself with those boundaries to be sure his standing occurs within ʿArafah.
When the sun passes its zenith, they pray Zuhr and ʿAsr shortened and combined with a single adhan