What is the ruling on praying in trousers and a shirt, or in a suit and a tie?

Question:
The questioner says: Some people say that praying in trousers and a shirt, or in a suit and a tie, is disliked. Please clarify this. May Allah reward you.

Answer:
The important point is that the one praying covers his 'awrah (part of the body that must be covered) with his clothing. He may wear whatever permissible and appropriate clothing for men is available to him, whether it is an izar (lower garment), a thawb (robe), or trousers. However, they say that the one praying may not be able to prostrate as required or sit as required because the trousers are tight, and he may not be able to sit between the two rak'ahs (units of prayer) or in the first and last tashahhud (testification recited while sitting in prayer) in the recommended sitting position.
Because his clothing is tight and prevents him from doing so, he should wear clothing that allows him to sit in prayer and prostrate in the required manner.