What is the ruling of Islamic law regarding sales employees in telecommunications companies offering free lines to customers in exchange for signing contracts, then selling these lines to other distributors so that the employee can achieve the required sales quota to receive their full salary, knowing that this practice may lead to a single SIM card being owned by two different individuals after the SIM card replacement process?

What was mentioned includes prohibitions. The first is: ignorance concerning the worker's wage, as it fluctuates between receiving the full amount or half of it, depending on the number of sold communication lines. Thus, the wage is unknown, and the worker may achieve more than what is required and still receive half the wage. Ignorance concerning the wage is forbidden. Among the prohibitions is the selling of lines by some employees to one person, then selling them or some of them to another. If one comes to withdraw from the second and it is returned to the first, this is an injustice and consuming people's wealth unlawfully. The fees for that do not permit this action. Rather, the sold lines must remain in the possession of their owner for the agreed-upon period or as is customary in practice.