Narrated `Aisha: Allah's Apostle entered upon me at Sarif while I was weeping (because I was afraid that I would not be able to perform the ,Hajj). He said, What is wrong with you? Have you got your period? I replied, Yes. He said, This is a matter Allah has decreed for all the daughters of Adam, so perform the ceremonies of the Hajj as the pilgrims do, but do not perform the Tawaf around the Ka`ba. Allah's Apostle slaughtered some cows as sacrifices on behalf of his wives.