Hazrat Hussain bin Ali (may Allah be pleased with him) and Hazrat Shurayh put on Ihram together for Hajj and Umrah, and neither of them became halal before the Day of Sacrifice.

It is narrated from Hazrat Abu Nasr that Hazrat Ali (may Allah be pleased with him) said to him: Recite the Talbiyah for both Hajj and Umrah. When you come to Makkah Mukarramah, perform two circuits (Tawaf) for them: one Tawaf for Umrah and one Tawaf for Hajj. And none of you should remove the Ihram before the Day of Sacrifice (Yawm al-Nahr).

It is narrated from Hazrat Jabir that the Holy Prophet (peace and blessings be upon him) said to Hazrat Ali (may Allah be pleased with him): When you intended to perform Hajj, what did you say? Hazrat Ali (may Allah be pleased with him) replied: I said, "O Allah, I enter into Ihram with the same intention as Your Messenger (peace and blessings be upon him)." The Prophet (peace and blessings be upon him) said: Surely, I have the sacrificial animal with me, and whoever is in Ihram with the sacrificial animal should not come out of Ihram. The narrator says that all the people came out of Ihram and had their hair cut short except the Prophet (peace and blessings be upon him) and those who had the sacrificial animal with them.

It is narrated from Hazrat Urwah that Hazrat Abu Bakr Siddiq and Hazrat Umar came, and both of them had put on the Ihram for Hajj, so both of them did not become halal until the Day of Sacrifice (Yawm al-Nahr).

Hazrat Ibn Umar (may Allah be pleased with both of them) narrates that whoever enters into the state of Ihram for Hajj and Umrah, one Tawaf is sufficient for him, and he should not exit from Ihram until he completes his Hajj as well, then he should exit from both Ihrams.

Hazrat Abu Shu’bah narrates that on the day of Arafah, I was beside Hazrat Ibn Umar (may Allah be pleased with them both), and my mount was close to his mount, or my thigh was touching his thigh. I did not hear anything from him except these words: "La ilaha illallahu wahdahu la sharika lahu, lahul mulku wa lahul hamdu wa huwa ‘ala kulli shay’in qadeer" until we departed from Arafat towards Mina.

Hazrat Dawood bin Abu Asim narrates that I stayed with Hazrat Salim bin Abdullah in Arafat so that I could see what he does; he remained engaged in remembrance and supplications until the people departed for Mina.

It is narrated from Hazrat Ali (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Most often, I and the prophets before me used to supplicate with this prayer in Arafat: There is no deity worthy of worship except Allah, He is alone, He has no partner, to Him belongs the dominion and to Him belongs all praise. He has power over all things. O Allah, illuminate my heart, my ears, and my eyes. O Allah, open my chest and make my task easy for me. I seek refuge in You from the whispers of the heart and the severity of affairs, and I seek refuge in You from the trial of the grave. O Allah, I seek refuge in You from the trials that come to me by day or by night, and from the trials that are carried by the wind.

It is narrated from Hazrat Ibn Abi Husain that the Noble Prophet (peace and blessings be upon him) said: Most often, I and the prophets before me would supplicate in Arafat with this prayer: There is no deity worthy of worship except Allah. He is alone, He has no partner. To Him belongs the dominion and to Him belong all praises. All goodness is in His control. He gives life and causes death, and He has power over everything.

A person asked Hazrat Ibn al-Hanafiyyah, "Which supplication is the best to recite during Hajj?" He replied: "La ilaha illallah, wallahu akbar."