Sahih Bukhari Volume 2, Book 26, Hadith Number 593.

Narated By Al-Qasim bin Muhammad : ‘Aisha said, “O Allah’s Apostle! You performed ‘Umra but I did not.” He said, “O ‘Abdur-Rahman! Go along with your sister and let her perform ‘Umra from Tan’im.” ‘Abdur-Rahman made her ride over the pack-saddle of a she-camel and she performed ‘Umra.