The pundit-prepared document specifying the date, time, and details of the ceremony. Many Bengali families treat this as the definitive marriage document — it isn't. It's a private religious document, not a government certificate, and courts treat it as supporting evidence, not standalone proof.
What it's useful for: it establishes the date of the marriage specifically, which helps when other documents are vague. Combined with the wedding invitation, joint photographs, and a joint affidavit, it strengthens the overall proof package.