What is important to specify in the original bug if we have found its duplicate?

In the original bug, when a duplicate is found, it is important to specify:

1. Link to the duplicate: A clear link to the found duplicate for easy navigation between bugs.
2. Status: Change the status of the original bug to Duplicate, Closed as Duplicate, or similar, depending on the bug tracking system used in the project.
3. Reason for closure: Clearly indicate that the bug is closed as a duplicate, with a link to the original or more detailed bug.
4. Additional comments (optional): A brief explanation of why this bug is considered a duplicate (e.g., "describes the same problem under the same conditions").