Maliks Muwatta Book 20, Hadith Number 232.
Yahya related to me from Abd ar-Rahman ibn al-Qasim, from his father that A’isha, umm al-muminin, said, “We set out with the Messenger of Allah, may Allah bless him and grant him peace, in the year of the farewell hajj and we went into ihram for umra. Afterwards, the Messenger of Allah, may Allah bless him and grant him peace, said, ‘Whoever has a sacrificial animal with him should go into ihram for hajj and umra together, and he should not leave ihram without leaving ihram for both of them at the same time.'”
She continued “I was menstruating when I got to Makka, so I did not do tawaf of the House or say between Safa and Marwa. I complained to the Messenger of Allah, may Allah bless him and grant him peace, and he said, ‘Undo your hair and comb it and leave the umra and go back into ihram for the hajj.'”
She said, “I did so, and when we had completed the hajj, the Messenger of Allah, may Allah bless him and grant him peace, sent me with Abd ar-Rahman ibn Abi Bakr as-Siddiq to at-Tanim and I performed an umra and he said, ‘This is in place of your umra.'”
“Those who had entered ihram for the umra did tawaf of the House and say between Safa and Marwa, then left ihram. Then they did another tawaf after returning from Mina for their hajj, whereas those who entered ihram for the hajj or combined the hajj and the umra, only did one tawaf.”
Yahya related the same as that to me from Malik from Ibn Shihab from Urwa ibn az-Zubayr from A’isha.