Signing the visa cancellation papers without getting labour dues

Does an employee have to sign any paper with the employer to initiate his visa cancellation after the resignation and before last working day?

My employer is asking me to sign a form named "United Arab Emirates Ministry of Human Resources and Emiratisation Electronic Work Permit Cancellation", where all my details are printed and written, "I certify that I have received all my dues up to date... Employee Signature".

My notice ends on Aug 29th and they are yet to pay end of service...etc., and this is an unlimited contract and my employer is asking me to sign this paper saying this should be signed to initiate visa cancellation.

But I am uncertain to sign as I haven't received my pay yet but the paper says so.

Please suggest