Is there a specific percentage for profit in trade, for example, half the value or a quarter of the value? May Allah reward you with good?

Question:
Is there a specific percentage for profit in trade, for example, half the value or a quarter of the value? May Allah reward you with good.

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. All praise is due to Allah, Lord of the worlds, and may Allah send prayers and blessings upon our Prophet Muhammad, and upon his family and all his Companions. As for what follows, Allah (Glorified and Exalted is He) has permitted trade in buying and selling. He the Exalted said: And He the Exalted said: the verse. And He the Exalted said: "And Allah has made lawful sale and forbidden riba (usury or interest)." Trade in permissible wealth is a matter of consensus among the scholars, and it is among the best of earnings. It was reported in a hadith that the generous merchant . There is no fixed limit for profit in trade; rather, this depends on the prices in the markets, whether they rise or fall. Likewise, if the sale is deferred and the increase is due to the deferral, there is no harm in that; for it is known that a person does not sell on credit unless he obtains a benefit greater than that of a cash sale. For this reason, deferred sale with an increase over cash sale was made permissible. There is no specific limit for this, but the merchant should not exploit the need of the needy person by increasing the price excessively. Rather, this should be within the bounds of what is customary and within the limits of an increase that does not burden the needy person, because usually, only a needy person buys on credit. Therefore, the merchant should not exploit his brother's need by increasing the price to the point of doubling it; rather, this should be within reasonable limits. Likewise, if the buyer is naive and does not know, it is not permissible for the seller to take advantage of him and increase the price excessively. If this becomes apparent, the buyer has the option of rescission due to gross overcharging, as the scholars have explicitly stated. The option of rescission due to gross overcharging is established by an increase that is excessive and unconstrained, meaning one who is not good at competing and bargaining over goods, but rather accepts the seller's word. It is not permissible for the seller to exploit the naivety or ignorance of this buyer by increasing the price excessively. The Prophet (peace and blessings be upon him) prohibited intercepting caravans and intercepting goods in order to prevent deceiving them, until they descend to the market and know the prices of the goods. The Prophet (peace and blessings be upon him) granted the option of rescission to the caravan owners if they were deceived. In conclusion, trade and seeking profit are a good and prescribed matter, but it must be within the limits of what is prescribed, and within the limits of matters that do not involve deception or taking advantage of the needs and necessities of the needy.