The Witr Prayer
Question :

Is it permissible to offer the prayer of Witr in the sitting manner?

Answer :

The obligatory prayers must be offered while standing with the ability and freedom of choice, and it is not obligatory to offer them while standing with a justifiable excuse. Recommended prayers like the Witr prayer can be offered in sitting position, however it is recommended to offer it in two rakah's then.

Prayer with the Hands Closed
Question :

If a woman considers that offering prayers with hands closed on the breast is obligatory or recommended, then is her prayer valid?

Answer :

If the woman did this while not being aware of its being wrong, then this does not affect the validity of her prayers. If she was aware that it is not legislated and insisted on doing this then the prayer is invalid.

Prayer of a Pregnant
Question :

I am pregnant and I have some weeks to give birth. Am I excused from prayer as I just feel so lazy and tired most of the time and I do not have the energy to pray?

Answer :

It is obligatory on you to perform the prayer in a way that does not cause you harm and hardship, even if it is performed while sitting.

Feeling Shy While Praying
Question :

Is it permissible to perform prayers sitting or lying in a case when we feel shy or discomfort?

Answer :

Offering the obligatory prayers while sitting or lying down when being able to offer it in the regular way is not sufficient. Being shy or feeling discomfort is not a valid justification pray in this way.
It is sufficient to pray sitting or lying down in the recommended prayers.

Taking off shoes
Question :

If a person prays sitting on a chair because of illness, is it necessary for him to take off his shoes?

Answer :

Taking off the shoes is not obligatory.

Qadha Prayers While Sitting
Question :

My mother has 20 years of prayers to make up. She is able to offer the five daily prayers while standing up but with difficulty due to an illness she has. Is she allowed to complete her qadha prayers while sitting down and her main five daily prayers while standing up?

Answer :

If she can offer the qadha prayer in the regular standing position even with difficulties, then it is obligatory to do so.
If she can only offer the qadha prayer while sitting, then it is permissible to do so. However, if she could offer those prayers in a complete way in the future then she should repeat those prayers that she offered while sitting.
If her inability is permanent, then the prayers she offered while sitting are in order.