Tawaaf al-Ifaadah is a pillar among the pillars of Islam and being pure is a precondition for the validity of Tawaaf. When a woman menstruates before performing Tawaaf al-Ifaadah, then she should not leave until she has attained purity, thereafter, she should perform Tawaaf al-Ifaadah. This is different from Tawaaf al-Widaa’ (the Farewell Tawaaf), which drops from her, just as this hadeeth clarifies. In this hadeeth, the Mother of Believers ‘Aaishah (may Allah be pleased with her) narrates that when the Companions (may Allah be pleased with them) performed the Farewell Hajj with the Prophet ﷺ, they performed Tawaaf al-Ifaadah on the Day of Sacrifice, that is on the tenth day of Thoo al-Hijjah. Then, the Mother of the Believers, Safiyyah bint Huyayy (may Allah be pleased with her) menstruated after performing Tawaaf al-Ifaadah. The Prophet ﷺdesired from her what a husband desires from his wife. This is an allusion to the intention of performing sexual intercourse. This happened when his wives sought permission from him concerning the performance of Tawaaf al-Ifaadah and he ﷺhad given them the permission. He thought that she had already performed the Tawaaf with them and had exited the second time, which makes it permissible thereafter for a man to come to his wife. When he was told that she was menstruating, he thought that she might have started menstruating before that to the extent that he refused her to perform Tawaaf al-Ifaadah in that account. Hence, the Prophet ﷺinquired concerning that saying, “Is she going to stop us [from travelling]?” Meaning: Are we going to be forced to stay behind until she attains the purity and performs Tawaaf al-Ifaadah? He was told, “Safiyyah (may Allah be pleased with her) has already performed Tawaaf al-Ifaadah,” or that ‘Aaishah notified him that she had already performed the Tawaaf with them. When he came to know about that, the concern that he had of staying behind and waiting until she attains purity and performs Tawaaf al-Ifaadah ceased to exist. He ﷺthen permitted them to travel and allowed Safiyyah (may Allah be pleased with her) to forgo Tawaaf al-Wadaa’..