Musnad Ahmad 1153:477

Zakariya ibn 'Adi narrated to us, he said: 'Ubayd Allah ibn 'Amr informed us, from 'Abd Allah ibn Muhammad ibn 'Aqil, from 'Urwah, from 'A'ishah, who said: "When the Messenger of Allah (peace and blessings of Allah be upon him) intended to enter into Ihram, he would wash his head with khatmi (marshmallow) and ushnan (alkali), and he would oil it with a little bit of olive oil, not much." She said: "We performed Hajj with the Messenger of Allah (peace and blessings of Allah be upon him) in a Hajj. He allowed his wives to perform 'Umrah, but he left me out. So I felt hurt in myself that the Messenger of Allah (peace and blessings of Allah be upon him) had allowed his wives to perform 'Umrah and left me out. I said: 'O Messenger of Allah, you allowed your wives to perform 'Umrah and left me out?'" He said to 'Abd al-Rahman: "Go out with your sister so she may perform 'Umrah. Let her circumambulate the House, and [walk between] al-Safa and al-Marwah, then let her complete it, then bring her to me before I depart on the night of al-Hasbah." She said: "The Messenger of Allah (peace and blessings of Allah be upon him) only stayed at al-Hasbah because of me."