Oklahoma Lease Agreement Does The Lease Agreement Have To State That The Deposit Will Be Terminated If We Break The Lease?

Does the lease agreement have to state that the deposit will be terminated if we break the lease? - oklahoma lease agreement

We rented an apartment in Oklahoma. The conditions were From 07 July until 08 July. The lease, it must give the tenant 30 days prior to demolition. We did. N, if the contract is to break the contract, to lose the contract, but the owner is to keep a full tank. It is said that less than 30 days, the deposit against the loss, but that all you will lose the deposit according to our lease.
Is it legal for him to keep our deposit?