Rule 290...
Rule 290: If the bleeding commences after completion of the tawaaf but before saying the prayers (salaat) for the tawaaf, it is valid and she should say the prayers after performing her ghusl but if the time is short, she should perform the saee and taqseer and say the prayers by way of qadha before the tawaaf of Hajj.
Rule 291: If a lady has completed her tawaaf and said her prayers (salaat) for the tawaaf and then feels the bleeding but is uncertain as to whether it commenced before the tawaaf or the prayers or during one of them or after completion of the prayers, she should proceed on the basis that the tawaaf and the prayers are valid. However, if she knows that it commenced before or during the prayers, the preceding rule will apply.
Rule 292: If, when a lady enters Makkah she is able to performs the Umrat-ul-Tamatoo but deliberately postpones its completion until her monthly period commences and the time becomes short, it is apparent that her Umrah becomes invalid. As a matter of caution, she should change to Hajj-ul-Ifraad and has no choice but to perform the pilgrimage again in the following year.
Rule 293: In an optional tawaaf, cleanliness is not a prerequisite and is valid without it but it is essential for the prayers (salaat) which are not valid without it. Rule 294: It is sufficient for a disabled person to clean himself according to his condition. For example, he may be helpless or incontinent of urine or afflicted with intestinal ailment and may not be able to control himself.
As a matter of caution, he must do both, if possible, perform the tawaaf personally and appoint an attorney to perform it on his behalf.
In the case of abnormal menstruation, as a matter of caution, if it is little, she should perform a separate wudhoo for both the tawaaf and the prayers; if it is moderate, she should perform a ghusl but a separate wudhoo for both of them and if it is intense then she should perform a separate ghusl for the tawaaf and the prayers without the need for wudhoo if there is no urination. If there is, then, as a matter of caution, wudhoo would also have to be performed with the ghusl.
Thirdly, Conditions of tawaaf: Cleanliness of the body and clothes: a tawaaf is not valid if the body or the clothes worn are unclean (najis). The uncleanliness (najasah) which is excusable in prayers (salaat)-like blood of the size of less than a dirham is not, as a matter of caution, excusable in tawaaf.