Is it permissible for a husband to sell digital cameras to customers when he knows they will use them to take nude pictures?

It is not permissible to sell cameras to those who use them for prohibited acts or are highly likely to do so, such as nude photography, as this constitutes cooperation in sin and aggression, and the spread of indecency. However, selling them to those who use them for permissible purposes, such as Islamic lectures and nature photography, is acceptable. The Muslim merchant must fear Allah and abandon anything that entails harm and evil.