(17) باب بَيَانِ وُجُوهِ الإِحْرَامِ وَأَنَّهُ يَجُوزُ إِفْرَادُ الْحَجِّ وَالتَّمَتُّعِ وَالْقِرَانِ وَجَوَازِ إِدْخَالِ الْحَجِّ عَلَى الْعُمْرَةِ وَمَتَى يَحِلُّ الْقَارِنُ مِنْ نُسُكِهِ
Abd al-Rahman b. Abu Bakr reported that the Messenger of Allah (ﷺ) ordered him to mount A'isha behind him and enable her to (enter into the state of Ihram for 'Umra) at Tan'im.
Reference: Sahih Muslim 1212
In-book reference: Book 15, Hadith 145
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 2790