What is the ruling on money received as compensation for a car accident, given that the assessment of the exhibition Sheikh was higher than that of the traffic department, and is the questioner sinful for that?

Estimating damages from traffic accidents depends on the discretion of specialists, and it is natural for them to differ in their assessments. It is best to adopt the average estimate. Since the party who caused the accident agreed to the arbitration of the car dealership's shaykh (expert) and accepted his ruling, there is no harm in taking the compensation he decided.