Step 1: Understanding the Concept:
The question deals with a procedural aspect of discovery and inspection in a civil suit. It refers to a situation where the right of a party to see certain documents or get certain information from the other party first depends on the court's decision on a particular issue in the suit.
Step 2: Key Formula or Approach:
This procedure is governed by Order XI, Rule 20 of the Code of Civil Procedure, 1908.
Order XI, Rule 20. Premature discovery.— "Where the Court is of opinion that any right to discovery or inspection sought depends on the determination of any issue or question in dispute in the suit... the Court may order that such issue or question be determined first, and reserve the question as to the discovery or inspection."
The issue that is decided first before other issues to determine the course of the suit is known as a preliminary issue. (See also Order XIV, Rule 2).
Step 3: Detailed Explanation:
For example, in a suit for accounts, the defendant might deny that there is any liability to account at all. Here, the plaintiff's right to inspect the account books (inspection) depends on the determination of the issue of whether the defendant is liable to account. The court can decide to try this issue of liability first as a preliminary issue. If the court finds the defendant is not liable, the suit is dismissed, and the question of inspecting the account books does not arise.
- \textit{Res judicata} and \textit{Res sub judice} are principles that bar the trial of a suit itself, not just a procedural step within it.
Step 4: Final Answer:
The court may try that issue as a Preliminary issue.