It is not necessary but it is better to correct their mistake.
If rows of women are behind men there is no need for a curtain but if they are beside each other the obligatory precaution demands that a curtain separates them.
It is well-known that wearing black clothing for prayer is makrūh and the reason behind it applies to both men and women; but cloak is an exception and it is likely that black Chador is also an exception.
According to the Islamic law, in order to be properly covered, women must cover all of the body except the face and hands. Furthermore, some coverings, such as wigs, that are worn as ornaments are not enough. Similarly, clothes that are considered to be ornamental clothes are not enough. Proper cover for men, on the other hand, includes clothes that cover those parts of the body that are commonly covered by Muslims. Therefore covering the head, the hands, and arms (in short-sleeve shirts) and the like is not obligatory for men.
If it is possible, rent the land for the purpose of building the mosque from its custodian, and if there is no custodian then rent it from the religious authority and some of trusted people of that neighborhood need to sign that contract in order not to be forgotten. So, each year the rent that is paid must be used for holding mourning ceremonies for Imam Husayn (‘a). Moreover, the duration of the rental agreement should be specified and limited so that it can be renewed after the expiration of that period.
If it is not too difficult for them, they need to perform their prayers in standing position, even though they do it by using a cane and the like. However, if it causes them much difficulty and discomfort, they can perform their prayers in a sitting position.
Under the mentioned condition, which is a necessary condition, there is no issue with this kind of purification.
There are some limitations for women and sometimes for men for entering mosques; however, there are much fewer limitations for entering hussainiyyahs. Of course one will be granted a much greater reward for performing prayer in the mosque compared to a husainiyyah and this is why both kinds of building are constructed.
It is necessary for women to cover all of the body except the face, the hands up to the wrist and the feet up to the instep. Further, a woman’s body must be covered from all four sides during prayer and if ornaments are worn over the clothing they can be kept during prayers.
There is no issue with this if the bag is carried with them. Furthermore, if the body is contaminated they should wash it if it is not too difficult for them, and if it is too difficult for them to wash their body, they can perform their prayer in whatever state they are in.
This is not permissible, but it is permissible to sell them and use the money for other needs of the mosque.
There is no problem with it if the mosque is not decorated with gold and the picture of living creatures and on the condition that it does not lead to extravagance and the wasting of resources.
Precaution demands that the permission of the custodian be obtained but if the custodian of the mosque disagrees with what is in the interest of the mosque or he doesn’t pay attention to them, the board of trustees can obtain the permission of the religious authority in that matter.
According to some traditions, this phrase has been recited as a part of the call to prayer since the age of the Infallible Imams (‘a) but it was not widely recited in that era. Later on it became the motto of the Shiʻa school (for more information, refer to the valuable book of “al-Mustamsak”, chapter on adhān and iqāmah).
