Sahih Muslim Book 7, Hadith Number 2774.

Chapter : Types of Ihram- It is permissible to enter into the state of Ihram singularly for the sake of Hajj or for tamattu’ bi’l-‘umra ila’l-Hajj or for both hajj and ‘umra together.

‘Aisha (Allah be pleased with her) reported: We entered into the state of. Ihram for Hajj till we were at Sarif and I was in menses. The Messenger of Allah (may peace be upon him) came to me and I was weeping. The rest of the Hadith is the same but (with this portion) that there were sacrificial animals with Allah’s Apostle (may peace be upon him) and with Abu Bakr, Umar and with rich persons. And they pronounced Talbiya as they proceeded on. And there is no mention of this (too): “I was a girl of tender age and I dozed off and my face touched the bind part of the Haudaj.”