Shafaqna (Shia International News Association) – The Grand Ayatollah Sistani answered some questions regarding Clothing.According to Shafaqna the questions and answers are as follows:
Question1: Is it permissible to wear clothes that have pictures of intoxicating drinks as a promotion for drinking them? Is it permissible to sell such items?
Answer: It is forbidden to wear and sell them.
Question2: Even though some manufacturers write on their products that they have been made of natural silk, we doubt such a claim because of the goods very low price. Is it permissible for us to wear such an item and say salãt in it?
Answer: With doubt [whether the silk is pure], it is permissible to wear and say salãt in it.
Question3: Jurists have decreed that it is forbidden [for men] to wear pure and natural silk. Is it permissible for a man to wear silk that is mixed with other material if that clothing item is a necktie [or the normal tie]? And is it forbidden for man to wear the necktie, if it is made of natural and pure silk?
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].
Question4: Is it permissible for a man to wear a watch that contains parts made from gold or a watch whose strap is made of gold? Is it permissible to say salãt with it?
Answer: It is permissible to wear the first item and pray in it but not the second.
Question5: Clothing products in the West are made in many countries (China, India, etc…) and many leather products do not specify what kind of leather it is. In this case, what is the ruling on wearing such products?
Answer: Leather products are impure (najis) and salãt in them is not permissible, if we know that they have been made from the hide of an animal not slaughtered according to Islamic laws. Such products are considered pure and salat in them is permissible, if there is a probability that they were made from skin of an animal that is essentially halãl and was slaughtered according to Islamic laws.
Question6: We Muslims in Europe buy shoes, belts and other clothing items made of leather which may come from animals killed in non-Islamic way. At times such items are imported from Muslim countries or obtained from Muslim abattoirs here (since there are a few Muslim abattoirs in the U.K. for example).
Can we consider such leather to be pure (tãhir) in the probability that it might have been imported from Muslim countries or obtained from abattoirs adopting Islamic way of slaughtering, even if such a probability is very weak?
Answer: If the probability is so weak that the opposite is more likely (for example, 2%), it should not even be considered. Otherwise [if the probability is high], there is no problem in considering it to be pure (tãhir). Allãh knows the best.
Source: Ayatollah Sistani