Jurists have decreed that it is forbidden [for men] to wear pure and natural silk. Is it permissible for a…

Answer

It is not forbidden to wear a tie, even if it is from pure silk because it is not [big enough material] to cover the private parts that must be covered [in prayer]. As for the item that is mixed with other material to the extent that it cannot be described as “pure silk,” it is permissible to wear, even if it [is big enough so that it] can cover the private parts that must be covered [in prayer].