What is the legal ruling regarding how to retrieve a worker whose sponsorship has been transferred without fulfilling the institution's conditions, and is it permissible to file a lawsuit against him to reclaim him, or to inform the owner of the institution of the aforementioned details for discussion?

The agent is entrusted with the work and money of his principal. Trustworthiness requires him to act according to what has been stipulated for him. If the agent violates these stipulations and a damage results to his principal, then he bears the responsibility for it. To rectify this error, one can consult specialized advisors or reconcile with the principal.