Hafsah, daughter of AbdurRahman ibn AbuBakr, reported on the authority of her father: The Messenger of Allah (ﷺ) said to AbdurRahman: AbdurRahman, put your sister Aisha on the back of the camel behind you and make her perform umrah from at-Tan'im. When you come down from the hillock (in at-Tan'im), she must wear (ihram for umrah), for this is an umrah accepted (by Allah).
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْدُ الأَعْلَى بْنُ حَمَّادٍ، حَدَّثَنَا دَاوُدُ بْنُ عَبْدِ الرَّحْمَنِ، حَدَّثَنِي عَبْدُ اللَّهِ بْنُ عُثْمَانَ بْنِ خُثَيْمٍ، عَنْ يُوسُفَ بْنِ مَاهَكَ، عَنْ حَفْصَةَ بِنْتِ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرٍ، عَنْ أَبِيهَا، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ لِعَبْدِ الرَّحْمَنِ " يَا عَبْدَ الرَّحْمَنِ أَرْدِفْ أُخْتَكَ عَائِشَةَ فَأَعْمِرْهَا مِنَ التَّنْعِيمِ فَإِذَا هَبَطْتَ بِهَا مِنَ الأَكَمَةِ فَلْتُحْرِمْ فَإِنَّهَا عُمْرَةٌ مُتَقَبَّلَةٌ " .
sunnah.com