Praying in Pajamas or Sleeping Clothes
What is the ruling of praying (making salah) while wearing my pajamas under the robe?
In the name of Allah, We praise Him, seek His help and ask for His forgiveness. Whoever Allah guides none can misguide, and whoever He allows to fall astray, none can guide them aright.
The basic principle with regard to clothes is that they are pure, unless any najasah (impurity) has gotten onto them, in which case they must be purified.
Merely sleeping in clothes does not make them najis (impure); rather they remain pure until it becomes certain that any impurity has gotten onto them.
Watch this short video to get the answer with Dr. Muhammad Salah to know more about the ruling of praying in one’s pajamas.
Source: Huda Youtube Channel.Soucre Link