Musnad Ahmad 31:30

Ibn Abi ‘Adi narrated to us, from Dawud, from Abu Nadrah, from Abu Sa’id, who said: We went out with the Messenger of Allah, may Allah bless him and grant him peace, shouting out the Hajj (pilgrimage) loudly. When we had performed the circumambulation (Tawaf) of the House, he said: "Make it an Umrah, except for those who have the sacrificial animal with them." He said: So we made it an Umrah, and we exited the state of Ihram. Then, when the Day of Tarwiyah arrived, we shouted out the Hajj and set off toward Mina.