Musnad Ahmad 1153:544

Muhammad ibn Mus'ab narrated to us, he said: Al-Awza'i narrated to us, from 'Abd al-Rahman ibn al-Qasim, from his father, from 'Aishah, she said: "I used to twist the garlands for the sacrificial animals of the Messenger of Allah, peace and blessings of Allah be upon him, with my own hands. Then he would not abstain from anything, nor would he leave anything [that is permissible for a person in Ihram]. We do not know of anything that makes the forbidden permissible except for the Tawaf around the House."