Musnad Ahmad 1153:1641

Hammad ibn Usamah narrated to us, he said: Hisham informed us, from his father, from Aisha, who said: The Messenger of Allah, peace and blessings of Allah be upon him, entered upon Duba'ah bint al-Zubayr and said to her: "Do you intend to perform Hajj?" She said: "By Allah, I do not find myself but ailing." He said to her: "Perform Hajj and make a condition, and say: 'O Allah, my place of exiting is where You have detained me.'" And she was under the marriage of al-Miqdad ibn al-Aswad.