Sibikattanam:
The Arabic Salary Letter should clearly mention your Salary, NOC for bringing family plus whether Accommodation provided by company or if HRA provided, details of the same.

Considering Accommodation is provided by Company, Ensure to have the building contract copy signed between the company and the landlord (No attestation needed) plus Company Print out to reflect the authorized signatory signed for the accommodation is listed in the company print out as well.