Is it permissible to deal in alcohol and pork if one is not going to sell them to Muslims?
Praise be to Allaah.
It is not permissible to deal in foods and other things, such as alcohol and pork, that Allaah has prohibited, even if one is selling to kaafirs, because it was reported that the Prophet (peace and blessings of Allaah be upon him) said: “When Allaah forbids a thing, He forbids its price.” And because he (peace and blessings of Allaah be upon him) cursed alcohol and the one who drinks it, the one who sells it, the one who buys it, the one who carries it, the one to whom it is carried, the one who consumes its price, the one who squeezes the grapes and the one for whom they are squeezed. And Allaah knows best.
From Fataawaa al-Lajnah al-Daa’imah, 13/47