Is the salary earned by a dentist working in a clinic permissible or impermissible, given that the clinic forges the signatures of employees of insurance companies to obtain money without providing them with medical services, and given that this forgery does not occur in the dental section?

The falsification by the dispensary management of workers' signatures to obtain funds from insurance companies is a forbidden act, as it involves lying, forgery, and unjustly consuming others' property, in accordance with the Almighty's saying: "And do not consume your properties among yourselves through falsehood." The management must be advised regarding the prohibition of this act. As for the questioner's work in the dispensary and his salary, it is permissible and lawful, because the dispensary's funds are mixed, both lawful and unlawful, and working for someone with mixed wealth is permissible as long as it does not aid in a sin.