According to the teachings of Ahlul Bayt, is it permissible to keep certain types of food or any item in storage for a long period of time, with the intention of waiting for its value to increase before selling it?
Monopoly of food required by people is not allowed in Islam. If the items of food are not required in people daily life and keeping it in storage does not harm general public, then can be permissible but if keeping it is storage harms people in anyway, then it is not allowed at all.
Wassalam.