What documents must be prepared to apply for polygyny?

Usually you need to prepare the application form with a declaration, copies of identity cards, the existing marriage certificate, and proof of income and dependants. The exact list is set by the state court or religious affairs office, but it usually includes:
• copies of the identity cards of the applicant, the existing wife and the prospective wife;
• the marriage certificate of the existing marriage;
• a salary letter or payslips, bank statements or proof of business income;
• a list of dependants (children, parents) and financial commitments;
• details of the prospective wife and her wali;
• the grounds of the application and whether the existing wife consents.
Some states ask for additional documents such as a pre-marriage course certificate or a medical report. Contact your district Syariah Court counter first. Guide: polygyny procedure.