Hajj is the fifth pillars of Islam, and it is an act of worship for those who can find a way to it. All its rituals must be taken from the Sunnah of the Messenger of Allah (may Allah's peace and blessings be upon him). The Prophet's Companions were keen to convey that to the Tābi‘is. This Hadīth is an abridged version of another Hadīth narrated by Muslim, in which ‘Abdullāh ibn ‘Abbās (may Allah be pleased with him) reported: "The Messenger of Allah (may Allah's peace and blessings be upon him) proclaimed Talbiyah for Hajj" i.e., he (may Allah's peace and blessings be upon him) went out of Madīnah intending to perform Hajj. So, he assumed Ihrām for Hajj and raised his voice in saying Talbiyah. His assumption of Ihrām and proclamation of Talbiyah took place in Dhul-Hulayfah, which is known today as "Ābār ‘Ali". He arrived in Makkah as four nights of Dhul-Hijjah had passed, in the tenth Hijri year. He performed the Fajr prayer at Al-Bat'hā’ on the morning of the fourth day of Dhul-Hijjah. Al-Bat'hā’: a place outside Makkah, and it is a broad channel containing small pebbles. It is also called Al-Muhassab. When he performed the Fajr prayer, he enjoined them to dissolve their Ihrām of Hajj and turn it into ‘Umrah. This is because during Jāhiliyyah "they used to consider the performance of ‘Umrah during the months of Hajj to be one of the worst immoralities in the world." Narrated by Al-Bukhāri and Muslim. So, the Prophet (may Allah's peace and blessings be upon him) wanted to forbid them from that and demonstrate the lawfulness of doing so, and that whoever wants to perform ‘Umrah during the months of Hajj may perform it, and there is nothing wrong with that, and he becomes a performer of Tamattu‘ Hajj. When a person comes to Makkah during the months of Hajj and performs ‘Umrah, he may end his Ihrām and enjoy all the lawful things till the beginning of the Hajj rituals, and then he assumes Ihrām for Hajj. It is said: He enjoined those who did not have the Hady to do that. As for those who brought the Hady, they should remain in their Ihrām for Hajj and not end it, for the Prophet (may Allah's peace and blessings be upon him) said: "Had I not had the Hady with me, I would have ended my Ihrām." Narrated by Al-Bukhāri and Muslim..