It is the obligation on the landlord to cancel Ejari. Except Ejari is cancelled, they won't have the ability to lease out the property again. - In case the tenant is a person, a copy of your tenant's Emirates ID and https://therepairer.ae/%d8%a5%d9%8a%d8%ac%d8%a7%d8%b1%d9%8a-ejari/