Selling Instruments used for Prohibitions
Question :

I work in the sale of sound equipment like woofers, tweeters, amplifiers, microphones, different kinds of lighting and musical instruments – is it prohibited for me sell these items?

Answer :

It is prohibited to sell musical instruments, and it is permissible to sell the other equipment.

Smoke Infuser
Question :

We wish to sell a product with good potential. It is a smoke infuser, which is used to infuse flavored smoke on food and drinks. It may also be used by the consumers to smoke alcoholic drinks. Will it be permissible to sell the item?

Answer :

It is permissible to sell this, as it has a permissible use.