My question is concerning silk ties for men. I have heard at some conferences that silk ties are allowed since it does not touch the skin. However, I read in Bukhari that the Prophet (peace be upon him) has said that the most silk a man could wear is four fingers width. Also, the Prophet (peace be upon him) says a man who wears silk in this world will not wear it in the hereafter. What is Islamic opinion on this?
Wearing of attire made of pure silk in the form of a shirt or tie, etc. is forbidden for men; there is almost a scholarly consensus on this issue. However, some scholars permit it in rare, exceptional cases such as allergic reaction or a dire necessity, or because of not finding anything else to wear, etc.
The above scholarly opinion concerning the prohibition of silk is based on the explicit statement of the Prophet (peace be upon him) “Wearing of silk has been forbidden for men of my Ummah”. The Prophet’s words being categorical in its implication, there is no way to justify wearing of pure silk in ordinary circumstances.
As for clothes that are not made of pure silk, but a mixture of silk and other substances such as cotton, acrylic, wool, etc., scholars are divided on the ruling about them. Upon a closer look at the various views on this issue, one can, however, safely conclude: If silk is not the preponderant substance that the cloth is made up of, then it shall be judged as permissible; say for example: if a certain piece of cloth is 60% cotton and 40% silk, then it shall be considered as permissible for men to wear.