Dying declarations are relevant under which section of Bhartiya Sakshya Adhiniyam?

S.26. Cases in which statement of relevant fact by person who is dead or cannot be found, etc., is relevant. Statements, written or verbal, of relevant facts made by a person who is dead, or who cannot be found, or who has become incapable of giving evidence, or whose attendance cannot be procured without an amount of delay or expense which under the circumstances of the case appears to the Court unreasonable, are themselves relevant facts in the following cases, namely:— (a) when the statement is made by a person as to the cause of his death, or as to any of the circumstances of the transaction which resulted in his death, in cases in which the cause of that person's death comes into question. Such statements are relevant whether the person who made them was or was not, at the time when they were made, under expectation of death, and whatever may be the nature of the proceeding in which the cause of his death comes into question.