Hajj is one of the pillars of Islam, and it is an act of worship for those who can find a way to it. Its pillars, Sunnahs, and etiquettes must be taken from the Prophet (may Allah's peace and blessings be upon him). In this Hadīth, the noble Companion ‘Abdullāh ibn ‘Umar (may Allah be pleased with him) informs that they were with the Messenger of Allah (may Allah's peace and blessings be upon him) in the morning of the day of ‘Arafah during the Farewell Hajj, in the tenth Hijri year. ‘Arafah: a mountain lying on the way between Makkah and Tā’if and located nearly 22km from Makkah, 10km from Mina, and 6km from Muzdalifah. The most important ritual of Hajj is performed in ‘Arafah, which is standing at ‘Arafah on the ninth day of Dhul-Hijjah. Some of the people with the Prophet (may Allah's peace and blessings be upon him) were "saying Takbīr" i.e., saying: Allahu akbar (Allah is the Greatest), and some of them were "saying Ihlāl" i.e., proclaiming Talbiyah, as in another version by Muslim. Ihlāl is to raise one's voice with Talbiyah. This indicates that the Prophet (may Allah's peace and blessings be upon him) approved their Dhikr, be it Takbīr or Talbiyah. And it is said: The intended meaning is that he would incorporate some Dhikr into Talbiyah, not that he abandoned Talbiyah altogether, as it is reported that the Prophet (may Allah's peace and blessings be upon him) did not cease Talbiyah till he threw Jamrat al-‘Aqabah. Ibn ‘Umar (may Allah be pleased with him) said: "As for us, we were saying Takbīr" i.e., he (may Allah be pleased with him) and those with him chose to say Takbīr in this Hajj of theirs. Then, ‘Abdullāh ibn Abi Salamah - one of the Hadīth narrators - said to ‘Abdullāh ibn ‘Abdullāh ibn ‘Umar: "By Allah, your affair is strange! How did you not say to him" i.e., to Ibn ‘Umar as he was narrating this Hadīth which he cited as proof for Takbīr instead of Talbiyah; "What did you see the Messenger of Allah (may Allah's peace and blessings be upon him) doing?!" I.e., which Dhikr among these Dhikrs you knew or saw the Messenger of Allah (may Allah's peace and blessings be upon him) saying: is it Takbīr or Talbiyah? By this, 'Abdullāh ibn Abi Salamah wanted to know what is best, for the Hadīth includes Takbīr and Talbiyah. So, he sought to learn what the Prophet (may Allah's peace and blessings be upon him) was saying to know which of the two Dhikrs was better and abide by it. The Hadīth mentions Tahlīl and Takbīr by Muhrims during the day of ‘Arafah. It shows the keenness of the Tābi‘īs to know what is best among the Sunnahs and etiquettes..