Chapter on the Rules of Menstruation, Istihadah, and Nifas, and Purification From Them

Then, the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: "It is necessary for her to refrain from performing prayer, and this is a matter upon which there is no disagreement among Muslims. This is also supported by the first Hadith which states: 'She should leave prayer,' as this is a mandatory command. Then, the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: 'She should not approach the mosque except in passing, nor should she touch the Quran or any written name of Allah سبحانه وتعالى on any object.' This has been sufficiently discussed in the chapter on janabah (ritual impurity due to seminal discharge), and it provides adequate evidence, as Allah سبحانه وتعالى wills. Then, the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: 'Fasting is also not permissible for her.' This, too, is a matter of consensus, and it is also supported by other evidence."