Section 6 of the Indian Evidence Act, 1872, deals with the relevancy of facts which, though not in issue, are so connected with a fact in issue as to form part of the same transaction. This principle is known as the doctrine of *res gestae* (Latin for "things done"). It allows for the admission of spontaneous statements, acts, or events that are closely associated in time, place, and circumstances with the main fact, making them relevant to explain it. For example, statements made by a victim or bystanders immediately after a crime are relevant under this section.