2079. It behooves every businessman to learn the precepts that pertain to buying and selling. In fact, in the cases where he has certainty or satisfaction—be it in a specific or general manner—owing to his ignorance of the precepts, he will be exposing himself to abandoning an obligation or committing a prohibited act; it is necessary for him, therefore, to learn the precepts that pertain to that case.
It has been narrated from Imam al-¥¡diq (as), “One who wishes to engage in business should be educated in his religion, so that he is aware of what is permissible for him and what is prohibited. One who engages in business while being uneducated in his religion, is afflicted with dubious transactions.”