[1] Performing Sal?t wearing tight clothes that display the shape of one’s private parts:-

Wearing tight clothes is something religiously Har?m [forbidden] and medically not recommended for its negative effects on the body. Some of those who wear them are not even able to prostrate themselves in Sal?t. If such clothes lead a muslim to abandon Sal?t then wearing them is totally forbidden. It is indeed proved that most of those who wear tight clothes do not perform Sal?t. And if they do, they perform it in the way the hypocrites do!!!

Many muslims of today do their Sal?t wearing tight clothes that shape their private parts or even display a part of them.

Al-H?fith Ibn Hajar related from Ashhab that the later held the opinion that if a person performed his Sal?t wearing trousers and was able to wear something else, he should repeat it [for the one he did wearing trousers is invalid] within its time unless these trousers are thick. Some hanafis held the opinion that doing Sal?t wearing trousers is something detested. (1)

Those reverend ‘Ulamah delivered such rulings concerning wide trousers, what would they have said had they seen the tight ones with which muslims of today do their Sal?t?? The eminent scholar Al-alb?n? said: ‘Trousers have two main hedious things; the first; those who wear it are actually imitating the disbelievers. Muslims of old days used to wear wide trousers [Sar?w?l], like those [wide ones] some Syrians and Lebanese still wear. Tight clothes is one of the things the colonizing nations left behind in the colonized nations which the later adopted easily because of their ignorance [in religion] and simple mindedness.

The second is that this kind of [tight] trousers shapes one’s private parts- which extend from the knees up to the navel for males. The praying person should be far away from such disobedience especially when he prostrates him self to All?h ( - ).