Musnad Ahmad 1206:0

Narrated to us by Yahya ibn Sa’id, from Sufyan, who said: Narrated to us Habib ibn Abi Amrah, from ‘Aishah bint Talhah, from Umm Ma’qal al-Asadiyah, who said: I pledged allegiance to the Messenger of Allah (ﷺ) as a woman who had performed the Hajj. I said: "O Messenger of Allah, I have two camels, and I intended to perform Hajj on them, but one of them died and the other is left." He (ﷺ) said: "Perform Hajj on it, for Hajj is an ‘Umrah."