Reference: Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa., – Volume 13, Page 53, Question 4 of Fatwa No.5177
Question: Is it permissible to buy alcohol (which is an intoxicant) to use it in such a way by which it will be destroyed, such as using it as fuel or in some manufacturing processes?
And is it permissible to sell it to people who one is certain will use it for such purposes?
Response: Selling alcohol or any other intoxicant is haraam. And it is obligatory for a person who has any of it to destroy it and not sell it, because of the general [meaning of the] statement of Allaah:
{And do not help one another in sin and transgression}, [Soorah al-Maa.idah, Aayah 2].
And with Allaah lies all success and may Allaah send prayers and salutations upon our Prophet ﷺ and his family and his companions.
