Musnad Abu Ya'la al-Mawsili 210:32

Abu Khaythama narrated to us, Kathir bin Hisham narrated to us, Ja'far narrated to us, Nafi' narrated to us, that Abdullah bin Umar informed him that Hafsa said: "The Messenger of Allah (ﷺ) commanded me to exit the state of Ihram during his Hajj, the Hajj which he performed."