Is it impermissible to take 20 pounds from each participant in a trip organized for 170 pounds, when the agreement with the organizing company was for 150 pounds?

The ruling on taking a commission varies according to the type of transaction: 1. If you were agents for your colleagues: It is not permissible for you to take anything without their knowledge, as an agent is a trustee, and any profit he makes belongs to his principal. For a commission on mediation (brokerage) to be valid, the contracting parties must be aware of it and agree on the fee. 2. If you were the organizers of the trip and profiting from it: You are allowed to take the agreed-upon fee from them, whether it is small or large, provided they are aware of your profit.

If what you took was unlawful: You must repent and return the money to its owners, for the Prophet, peace and blessings be upon him, said: «Whoever has wronged his brother concerning his honor or anything else, let him seek his forgiveness today before there will be no dinar and no dirham.»