sir the landlord not agree or accept part amount...

There is no legal text obliging the landlord to accept the reduction or postponement of the payment of the rental value paid by the tenant and we recommend that it is necessary to renegotiate with the landlord and if he does not accept the negotiation then the value of the checks must be paid in order to avoid being imprisoned.
Here is the text of the Qatar Penal Code related to your inquiry:
Article 357:
Whoever maliciously commits the following acts:
1. Writing a check, without sufficient funds to cover it face value.
2. Withdrawing all or some of the funds from an account after giving a check in a way that leaves insufficient funds to cover the amount of the check.
3. Ordering the recipient of the check not to exchange or deposit it
4. Intending to write or sign the check in a way that prevents its exchange.
5. Delivering a due cheque knowing that it is uncovered or not exchangeable.
In any event, the court shall decide upon the request of the concerned, to oblige the offender to pay the value of the cheque and the expenses incurred by the beneficiary;
The procedures in the Code of Commercial and Civil Procedure shall determine the execution of this judgment. If the court finds that this decision requires a special investigation necessitating a delay in the judgment, it has the right to pronounce a judgment in the lawsuit only and to defer the examination of the mentioned request to another session or refer it to the civil court.