The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 2767
'A'isha (Allah be pleased with her) reported: 'We went with the Messenger of Allah (may peace be upon him) (to Mecca). He said: He who intended among you to put on Ihram for Hajj and Umra should do so. And he who intended to put on Ihram for Hajj may do so. and he who intended to put on Ihram for 'Umra only may do so. A'isha (Allah be pleased with her) said: The Messenger of Allah (way peace be upon him) put on Ihram for Hajj and some people did that along with him. And some people put on Ihram for Umra and Hajj (both). and some persons put on Ihram for Umra only, and I was among those who put on Ihram for Umra (only).