Musnad Ahmad 12:4

Sufyan ibn 'Uyaynah narrated to us, from 'Amr—meaning Ibn Dinar—that 'Amr ibn Aws al-Thaqafi informed him, that 'Abd al-Rahman ibn Abi Bakr informed me, he said: "The Messenger of Allah (peace and blessings of Allah be upon him) commanded me to let 'Aishah ride behind me to al-Tan'im so that she could perform 'Umrah."