What should a menstruating woman do from the meeqaat until the end of Hajj?

If a menstruating woman
passes the meeqaat and intends to enter ihraam from the meeqaat, then when
she reaches Makkah she should do all the actions of Hajj except for tawaaf
around the House and saa’i between al-Safa and al-Marwah, which she should
delay until she becomes pure. This is also what a woman should do if her
period comes after she enters ihraam and before she does tawaaf. 

But if her period comes after doing tawaaf, then she may do
saa’i between al-Safa and al-Marwah even if she is menstruating.  

The scholars of the Standing Committee were asked: 

What is the ruling on a menstruating woman doing Hajj? 

They replied: 

A menstruating woman is
allowed to do Hajj. The one who enters ihraam has to do all the actions of
Hajj, but she should not circumambulate the House until her period ends and
she does ghusl. The same applies to women who are bleeding following
childbirth. If they do all the essential parts of Hajj then their Hajj is
valid. 

Fataawa al-Lajnah al-Daa’imah li’l-Buhooth al-‘Ilmiyyah
wa’l-Ifta’, 11/172-173. 

Shaykh Muhammad ibn Saalih al-‘Uthaymeen said: 

If a woman intends to do ‘umrah, it is not permissible for
her to pass the meeqaat without entering ihraam, even if she is
menstruating. So she should enter ihraam even if she is menstruating and her
ihraam is valid. The evidence for that is the fact that Asma’ bint ‘Umays,
the wife of Abu Bakr (may Allaah be pleased with them both) gave birth, when
the Prophet (peace and blessings of Allaah be upon him) was camped at
Dhu’l-Hulayfah on his way to perform the Farewell Pilgrimage. She sent word
to the Prophet (peace and blessings of Allaah be upon him) asking him
what she should do. He said: “Do ghusl and tie a piece of cloth around
yourself and enter ihraam.” 

The blood of menstruation is like the blood of nifaas. So we
say to the menstruating woman: if she passes the meeqaat and she intends to
do ‘Umrah or Hajj, we say to her: Do ghusl, tie a piece of cloth around
yourself and enter ihraam. What is meant by tying a piece of cloth is
placing a piece of cloth over the vagina and tying it in place, then
entering ihraam whether for Hajj or ‘Umrah. But when she enters ihraam and
reaches Makkah, she should not go to the Ka’bah or circumambulate it until
she becomes pure. Hence the Prophet (peace and blessings of Allaah be
upon him) said to ‘Aa’ishah, when she menstruated during ‘umrah: “Do
everything that the pilgrims do, but do not circumambulate the House until
you become pure.” This report was narrated by al-Bukhaari and Muslim.
According to Saheeh al-Bukhaari ‘Aa’ishah stated that when she became
pure she circumambulated the House and did saa’i between al-Safa and
al-Marwah. This indicates that if a woman enters ihraam for Hajj or ‘Umrah
when she is menstruating, or her period comes before she does tawaaf, then
she should not do tawaaf or saa’i until she becomes pure and does ghusl. But
if she did tawaaf when she was pure and after she finished tawaaf her period
came, then she should continue and do saa’i even if she is menstruating, and
she should cut her hair and end her ‘umrah, because tahaarah (purity) is not
essential for saa’i between al-Safa and al-Marwah. 

Sittoon Su’aalan fi’l-Hayd,
question no. 54. 

And Allaah knows
best.