It is not permissible to exchange old gold for new gold and pay the difference in value

Is it permissible to work as a sales manager in a company that produces contraceptive pills?

Selling things that may be used for haraam purposes

Dealing in alcohol, supplies for Christian holidays, condoms and cosmetic creams

Ruling on selling TVs, VCRs and Playstation

Should he sell a piece of fine glass to a man who will sell it on the basis that it is a diamond?

Ruling on selling subscriptions to a file downloading site on the Internet

Conditions of tawarruq on shares

It is not permissible to sell movable items until after one has taken possession of them

Buying gold through a site on the internet