A man residing in Makkah: when does he enter ihram?

Sayyiduna Ibn al-Zubayr (may Allah be pleased with him) stayed in Makkah for several years, and he used to enter ihram (for Hajj) with the new moon of Dhu al-Hijjah.

Ata said: I said to Sayyiduna Ibn Umar (may Allah be pleased with them both): "The new moon has been sighted," and he entered ihram from where he was. Then, when the following year came, I said: "The new moon has been sighted"; at that time he was in the House, and he took off his clothes and then entered ihram. Then, when the third year came, I said to him: "The new moon has been sighted." He said: "I am only one of the Companions; I do what they used to do." Then he remained without ihram until the 8th of Dhu al-Hijjah came.

Sayyiduna Umar (may Allah be pleased with him) said to the people of Makkah: "What is the matter, that I see you with oiled hair and well-groomed while the pilgrims are dishevelled and covered in dust? When you see the new moon of Dhu al-Hijjah, enter ihram."

When al-Hasan saw the new moon of Dhu al-Hijjah, he would enter ihram from Makkah.

It is narrated from Ata that Sayyiduna Ibn Umar (may Allah be pleased with them both) came, performed tawaf and sa'y, then stayed without ihram for four or five days, and then entered ihram for Hajj during the (first) ten days. Then, when he came another time, he remained without ihram until the 8th of Dhu al-Hijjah, and then on the 8th he entered ihram for Hajj when his camel set off (with him) towards Mina. Ata said: This is what is preferred in my view.

Ata said: And that is more beloved to us.

Ata and Sa'id bin Jubayr said: The people of Makkah will enter ihram for Hajj on the 8th of Dhu al-Hijjah.

Sa'id bin Jubayr said: He enters ihram on the Day of Tarwiyah (the 8th of Dhu al-Hijjah).

It is narrated from Mujahid that, in his later practice, Sayyiduna Ibn Umar (may Allah be pleased with them both) would remain without ihram until the 8th of Dhu al-Hijjah.