Salaah

Sitting on a chair and performing Salaah due to back pain

Q: I am having some trouble in reading Namaz and I want some suggestions from you. I am suffering from back pain together with sciatica and lumber disorder (pain affecting the back, hip, and leg, etc.). Owing to which I am unable to perform sajda and rukoo smoothly in the traditional way. Doctor says that it is caused by compression of a spinal nerve root in the lower back at L4 and L5 etc. by degeneration of an intervertebral disc.). So, Doctor suggested to me to avoid standing and sitting for a long time, bending/leaning of the back, squatting, lifting weight, etc. as it will lead in worsening my condition. So, in fear of Doctors advice I am using a stool/chair in offering salat. My question is, am I doing the right thing or is there any way in which I can read namaz? Please suggest ways in which I can offer my Namaz on a regular basis without having to compromise my health.

Dua after Durood in Salaah

Q: Is the following commonly recited dua after durood thabit?

اللهم اغفرلي و لوالدي و لأستاذي و لجميع المؤمنين و المؤمنات و المسلمين و المسلسلات برحمتك يا أرحم الراحمين

Performing Salaah on the plane

Q: With regard to travelling on the plane and the time of Salaah setting in particularly Maghrib. Often there is a clash between time of Salaah and the passengers busy seating themselves making it difficult to go to a space and perform Salaah. Otherwise the direction of qibla may be difficult to face.

Lastly is it permissible in such circumstances for a person who is completely fit to sit and perform Salaah in his/her seat?