How can give the authorization to someone to use my car in saudi?

I would like to ask whats the proper way of doing a authorization latter to drive a personal car? What are the procedures & steps on doing this? is there any stamp needed or i can do it by myself using car details and iqama details?

no my friend it is a law that if some one want to use your car u have to go to the nearest police station to make wakalla for him if u r car is on saudi national name u have to fallow the same rule cos if u don't fallow the right rule u can be in trouble if ur car has accident or police stops u so be care care full its free to make wakalla just go to the nearest maroor office (terrific police )

Thank you for your kind information

u r always wellcom