Is there a specific percentage for profit in Islam?

The questioner : One of the brothers is asking about the previous question: Is there a specific percentage for profit in Islam?

The Shaykh : The Sunnah does not specify a profit margin for any commodity. This is part of the perfection of Islam, because the reality of a particular commodity dictates that the profit be small. Why? Because the turnover of that commodity is high, such as sugar, rice, flour, and the like. People buy tons of it every day. However, there are items of which perhaps only one or two pieces are sold in a month, and so on. It is not wise to set a profit margin for such a material, nor for the first type of material. But what can be said in response to such a question is that it is not permissible for the seller to deceive the buyer or give him the impression that the profit he is demanding is excessive. As some people say, merchants call them in Syria "al-Jambaz." I do not know, by Allah, what you call them? I mean, a liar who says, "You did not pay the capital, you did not pay the capital," while he is a liar. This approach is not permissible. For example, if he knows that the capital is one hundred, he may ask for one hundred and ten, or one hundred and twenty, provided he does not deceive the buyer or say, "Others paid more than this and I did not sell to them," and many other well-known phrases. He is allowed to earn as much profit as he wishes, because if he is greedy, it will become apparent. It will become apparent when the customer comes to him, the first time, the second time, and eventually it will be clear that he was manipulating the price and taking more from him than from others. At that point, his goods will stagnate, because the nature of people is to prefer buying from the merchant who sells at the lowest prices. Yes.