Qasim narrates that Sayyida Aisha (may Allah be pleased with her) used to say that we set out with the Messenger of Allah (peace and blessings be upon him), and our intention was only for Hajj. When we reached the place of Sarif, I began to menstruate. When the Messenger of Allah (peace and blessings be upon him) came to me, I was crying. He (peace and blessings be upon him) asked: Why are you crying? I said: I wish I had not come for Hajj this year. He (peace and blessings be upon him) said: Perhaps you have started menstruating? I said: Yes. He (peace and blessings be upon him) said: Allah Almighty has ordained this for the daughters of Adam. Now you should perform all the acts that other pilgrims do, except do not perform the Tawaf of the House (Ka'bah) until you become pure... . Al-Hadith