What is the ruling on selling Western men's clothing?

If the question is about selling Western men's clothing to Muslims, there is no harm in that, as long as these clothes are not forbidden, such as clothing specific to disbelievers, or containing images, crosses, or symbols of disbelief. However, if the question is about selling them to Westerners, the general principle is that it is permissible to buy and sell with disbelievers, unless the sale assists them in forbidden acts, such as selling horses and weapons to someone who will use them for unlawful combat, due to His Almighty's saying: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression."