ʿAbdur-Rahman bin Abu Bakr told me that the Prophet ﷺ had ordered him to let ʿAisha ride behind him and to make her perform ʿUmra from at-Tanʿim.  

أَنَّ النَّبِيَّ ﷺ أَمَرَهُ أَنْ يُرْدِفَ عَائِشَةَ وَيُعْمِرَهَا مِنَ التَّنْعِيمِ  

The Prophet ﷺ and his companions assumed Ihram for Hajj and none except the Prophet ﷺ and Talha had the Hadi with them. ʿAli had come from Yemen and he had the Hadi with him. He (ʿAli) said, "I have assumed Ihram with an intention like that of Messenger of Allah ﷺ has assumed it." The Prophet ﷺ ordered his companions to intend the Ihram with which they had come for ʿUmra, to perform the Tawaf of the Kaʿba (and between Safa and Marwa), to get their hair cut short and then to finish their Ihram with the exception of those who had the Hadi with them. They asked, "Shall we go to Mina and the private organs of some of us are dribbling (if we finish Ihram and have sexual relations with our wives)?" The Prophet heard that and said, "Had I known what I know now, I would not have brought the Hadi. If I did not have the Hadi with me I would have finished my Ihram." ʿAisha got her menses and performed all the ceremonies (of Hajj) except the Tawaf . So when she became clean from her menses, and she had performed the Tawaf of the Kaʿba, she said, "O Messenger of Allah ﷺ! You (people) are returning with both Hajj and ʿUmra and I am returning only with Hajj!" So, he ordered ʿAbdur Rahman bin Abu Bakr to go with her to at-Tanʿim. Thus she performed ʿUmra after the Hajj in the month of Dhi-l-Hijja. Suraqa bin Malik bin Ju'sham met the Prophet ﷺ at Al-ʿAqaba (Jamrat-ul 'Aqaba) while the latter was stoning it and said, "O Messenger of Allah ﷺ! Is this permissible only for you?" The Prophet replied, "No, it is for ever (i.e. it is permissible for all Muslims to perform ʿUmra before Hajj."  

أَنَّ النَّبِيَّ ﷺ أَهَلَّ وَأَصْحَابُهُ بِالْحَجِّ وَلَيْسَ مَعَ أَحَدٍ مِنْهُمْ هَدْىٌ غَيْرَ النَّبِيِّ ﷺ وَطَلْحَةَ وَكَانَ عَلِيٌّ قَدِمَ مِنَ الْيَمَنِ وَمَعَهُ الْهَدْىُ فَقَالَ أَهْلَلْتُ بِمَا أَهَلَّ بِهِ رَسُولُ اللَّهِ ﷺ وَإِنَّ النَّبِيَّ ﷺ أَذِنَ لأَصْحَابِهِ أَنْ يَجْعَلُوهَا عُمْرَةً يَطُوفُوا بِالْبَيْتِ ثُمَّ يُقَصِّرُوا وَيَحِلُّوا إِلاَّ مَنْ مَعَهُ الْهَدْىُ فَقَالُوا نَنْطَلِقُ إِلَى مِنًى وَذَكَرُ أَحَدِنَا يَقْطُرُ فَبَلَغَ النَّبِيَّ ﷺ فَقَالَ لَوِ اسْتَقْبَلْتُ مِنْ أَمْرِي مَا اسْتَدْبَرْتُ مَا أَهْدَيْتُ وَلَوْلاَ أَنَّ مَعِي الْهَدْىَ لأَحْلَلْتُ وَأَنَّ عَائِشَةَ حَاضَتْ فَنَسَكَتِ الْمَنَاسِكَ كُلَّهَا غَيْرَ أَنَّهَا لَمْ تَطُفْ بِالْبَيْتِ قَالَ فَلَمَّا طَهُرَتْ وَطَافَتْ قَالَتْ يَا رَسُولَ اللَّهِ أَتَنْطَلِقُونَ بِعُمْرَةٍ وَحَجَّةٍ وَأَنْطَلِقُ بِالْحَجِّ فَأَمَرَ عَبْدَ الرَّحْمَنِ بْنَ أَبِي بَكْرٍ أَنْ يَخْرُجَ مَعَهَا إِلَى التَّنْعِيمِ فَاعْتَمَرَتْ بَعْدَ الْحَجِّ فِي ذِي الْحَجَّةِ وَأَنَّ سُرَاقَةَ بْنَ مَالِكِ بْنِ جُعْشُمٍ لَقِيَ النَّبِيَّ ﷺ وَهُوَ بِالْعَقَبَةِ وَهُوَ يَرْمِيهَا فَقَالَ أَلَكُمْ هَذِهِ خَاصَّةً يَا رَسُولَ اللَّهِ قَالَ لاَ بَلْ لِلأَبَدِ