Aisha

Bukhari :: Book 2 :: Volume 26 :: Hadith 702
Narrated 'Aisha:
We set out with Allah's Apostle in the year of his Last Hajj and we mended (the Ihram) for 'Umra. Then the Prophet said, "Whoever has a Hadi with him should assume Ihram for both Hajj and 'Umra, and should not finish it till he performs both of the them (Hajj and 'Umra)." When we reached Mecca, I had my menses. When we had performed our Hajj, the Prophet sent me with 'Abdur-Rahman to Tan'im and I performed the 'Umra. The Prophet said, "This is in lieu of your missed 'Umra." Those who had assumed Ihram for 'Umra performed Tawaf (between Safa and Marwa) and then finished their Ihram. And then they performed another Tawaf (between Safa and Marwa) after returning from Mina. And those who had assumed lhram for Hajj and 'Umra to get her ( Hajj-Qiran ) performed only one Tawaf (between Safa and Marwa).

Bukhari :: Book 2 :: Volume 26 :: Hadith 703
Narrated Nafi':
'Abdullah bin 'Abdullah bin 'Umar and his riding animal entered the house of Ibn 'Umar. He (the son of Ibn 'Umar) said, "I fear that this year a battle might take place between the people and you might be prevented from going to the Ka'ba. I suggest that you should stay here." Ibn Umar said, "Once Allah's Apostle set out for the pilgrimage, and the pagans of Quraish intervened between him and the Ka'ba. So, if the people intervened between me and the Ka'ba, I would do the same as Allah's Apostle had done . . . "Verily, in Allah's Apostle you have a good example." Then he added, "I make you a witness that I have intended to perform Hajj along with 'Umra." After arriving at Mecca, Ibn 'Umar performed one Tawaf only (between Safa and Marwa).