Section 17 of The Indian Evidence Act, 1872
17. Admission defined.—An admission is a statement, 1[oral or documentary or contained in electronic form], which suggests any inference as to any fact in issue or relevant fact, and which is made by any of the persons, and under the circumstances, hereinafter mentioned. Comment s Admissibility is substantive evidence of the fact Admissibility is substantive evidence of the fact admitted while a previous statement used to contradict a witness does not become substantive evidence and merely serves the purpose of throwing doubt on the veracity of the witness; Bishwanath Prasad v. Dwarka Prasad, AIR 1974 SC 117.