ANSWER:

If there is real hardship for them and they truly can’t pray on time due to their injury, combining is permissible. 

Wiping over the plaster or cast is permissible when washing underneath it is not possible.

QUESTION: When someone has a fractured leg and has difficulty in doing wudhu and performing salah, can they combine Dhur Asar & Maghreb Isha without shortening the prayers? And can they so masa over the plaster?

Ablution (Wudhu) |