Is it permissible to lie in financial transactions (such as currency exchange rates or customs duties) in order to obtain financial compensation that covers the loss of income resulting from the new laws that have reduced import opportunities, and the partner's refusal to increase the rent, knowing that the trade is conducted by renting the commercial register, and the tenant sells licenses that are only granted to the importer?

Before asking about the ruling on increasing the amount, one must first understand the ruling on leasing a commercial register. Assuming that leasing a commercial register is permissible, it is not permissible for the questioner to increase the amounts taken by the bank or the price of currency exchange or customs clearance. This is because it involves lying, deception, betrayal of trust, and consuming wealth unlawfully, as Allah Almighty says: "O you who have believed, do not consume one another's wealth unjustly," and as the Prophet, peace and blessings be upon him, said: "Whoever cheats is not of us," and "Indeed, the wealth of a person is not lawful except with his willing consent," and "Every Muslim's blood, wealth, and honor are sacred to another Muslim," and "Whoever unlawfully takes the wealth of a Muslim will meet Allah Almighty while He is angry with him."