[Machine] The Prophet ﷺ only made it known that it was Umrah, for they had come to Mecca before Arafah by four nights, and he disliked that the Muslims stay four nights without circumambulating the Kaaba. He knew that once they had circumambulated the Kaaba, they were permitted to remove the ihram, except for those who were bringing a sacrifice. So he said, "We have enjoyed Umrah three times, then I entered Umrah into Hajj until the Day of Resurrection."  

إِنَّمَا جَعَلَهَا النَّبِيُّ ﷺ عُمْرَةً فَإِنَّهُمْ قَدِمُوا مَكَّةَ قَبْلَ عَرَفَةَ بِأَرْبَعِ لَيَالٍ فَكَرِهَ أَنْ يَمْكُثَ الْمُسْلِمُونَ أَرْبَعَ لَيَالٍ لَا يَطُوفُونَ بِالْبَيْتِ وَعَلِمَ أَنَّهُمْ إِذَا طَافُوا بِالْبَيْتِ حَلُّوا إِلَّا مَنْ كَانَ سَاقَ هَدْيًا فَقَالَ «عُمْرَةٌ اسْتَمْتَعْنَا بِهَا ثَلَاثَ مَرَّاتٍ ثُمَّ دَخَلْتِ الْعُمْرَةُ فِي الْحَجِّ إِلَى يَوْمِ الْقِيَامَةِ»