Is it permissible for the questioner to take his share of the profits from a brokerage operation in selling top-up cards, given that his colleague largely completed the deal and no one objected to his inclusion as a broker?

The question encompasses two matters:

The first matter: Brokerage (mediation between two parties to a contract for a fee) is permissible as long as it does not involve assisting in or guiding towards something forbidden. It is considered a form of ju'ala (stipulated reward), and it is a condition that the fee be known, not a percentage of the profits, due to the presence of jahalah (uncertainty) and gharar (excessive risk) therein.

The second matter: The ruling on taking a share of the brokerage fee in return for calls and guidance, which has two scenarios: 1. If it is with the mutual consent of all concerned parties, then there is no harm in it, whether it is in exchange for work or as a gift. 2. If it is without their consent or if their consent is conditional upon work, then it is not permissible except on the condition of work. The calls and guidance provided by the questioner are considered work.