Explanation

Ibn ‘Abbās (may Allah be pleased with him) informed us that the Prophet (may Allah's peace and blessings be upon him) arrived with his Companions at Makkah during the Farewell Pilgrimage in the state of Ihrām to perform Hajj on the fourth of Dhu al-Hijjah. Some of them intended to perform Hajj only, while others intended both Hajj and ‘Umrah. He commanded the ones who did not have a sacrificial animal with them to change their state of Ihrām (from Hajj) to that of ‘Umrah. They thought doing so was very serious, as it involved unconditional exist from the state of Ihrām which would make sexual intercourse permissible, and then enter Ihrām for Hajj. Consequently, they asked the Messenger of Allah about that and he informed them that they should completely end their state of Ihrām, the thing that would make it permissible for them to do whatever they were forbidden from doing during Ihrām. They all complied.