Dr. `Abdul-Fattah `Ashoor, professor of Qur’anic Exegesis, at Al-Azhar University, states: “Referring to some of the categories of prohibited things, Allah Almighty says: “ Forbidden unto you (for food) are carrion and blood and swine flesh, and that which hath been dedicated unto any other than Allah…” (Al-Ma`dah: 3). Contemplating over the meaning of the above verse as well as other verses revealed in the same context, we notice that what is prohibited is eating; but it needs to be stressed that string of necessity is attached to this rule.
Referring to the string of necessity, Allah Almighty says: “He hath forbidden for you only carrion and blood and swine flesh and that which hath been immolated in the name of any other than Allah; but he who is driven thereto, neither craving nor transgressing, lo! then Allah is Forgiving, Merciful.” (An-Nahl: 115)
So it is clear that eating of the above-mentioned is prohibited, and it is only made lawful in case of dire necessity. Hence, wearing clothes made of pigskin is not prohibited as it is clear that the forbidden thing is to eat pork. However, it is better for a Muslim to steer clear of wearing such clothes (i.e. clothes made of pig skin and the like), because the impurity of pig is not removed even by tanning their skins, as pigs are impure in themselves. So the issue here is not confined to eating or drinking as the above verses mentioned, but it is related to wearing something which is completely or partially impure. Hence it is better to avoid wearing jackets that are made of pigskin.”