Selling AbuDhabi Car to Dubai Buyer

Just go to any Tasjeel. That's it.

thank you Nitin, but many were saying to me that I  have to first cancel the number plates from abudhabi and then only it can be transfered to a dubai buyer

Just go to Tasjeel, explain them the situation and they will do it.
Best is if you go along with the buyer as you cannot drive the car (even a mile) once you cancel the number plate.

An alternate thing that people usually do is they get an export number plate, but that will only add extra cost for you since you already have a buyer, I don't see a need for that.

Good morning.

You need to go to Abudhabi police department  Vehicles registration center ( MUROR ) with the buyer , they will take your old plate number then will give you export plate number just to drive it to Dubai police Reg center RTA - and the new buyer will complete his procedures.

Or

Deliver you plate number to Abdhabi police and the new buyer should take the car on the recovery to Dubai

I hope its clear