Islam, as an all-embracing religion that deals with all aspects of life, lays down rules and regulations that set the affairs of people in order and spread peace, welfare, prosperity, and well-being.
In the field of clothes, for example, Islam made silk forbidden to mean to wear but permissible for women. Muslim men and women to abide by certain code of ethics. Muslim women’s dress (hijab) serves as a good example in this regard. Men, likewise, are forbidden from wearing gold and silk.

It should be known that Allah, may He be exalted and glorified, is Wise in His commands and prohibitions. He does not command anything except that which is in people’s best interests and He does not forbid anything except that which is harmful. People may or may not come to understand the reasons behind these commands and prohibitions, although Allah has His Wisdom in any given issue. Having said that, it is still not right to make following a command or prohibition dependent upon knowing the wisdom behind it; rather we should hasten to carry out the commands of Shari’ah, regardless of whether the wisdom behind it is clear to us or not. If it is clear, then praise be to Allah, and if it is not, then the Muslim should not let the fact that he does not know it prevent him from acting in accordance with the ruling of Shari’ah.

The above does not mean that it is not important to look for the wisdom behind the rules of Shari’ah, or that doing so is forbidden, but we should not make knowing the reasons a condition for acting upon the ruling.

There is no connection between things that are prohibited in this world and those that are allowed in the Hereafter. It is not correct to think of the Hereafter as being like this world; each realm has its own rules and laws. It is not correct to suggest that something is permitted in this world on the basis that it is permitted in Paradise or in the Hereafter, otherwise we would end up allowing things that we know from the basics of Islam are forbidden, such as drinking wine, taking more than four wives, etc. On this basis, the confusion reflected in the question about silk being forbidden in this world although it is permitted in Paradise should be cleared up.