Under the Bharatiya Sakshya Adhiniyam, 2023, which section deals with the burden of proof on the party who would fail if no evidence were given on either side? 

Section 105 of the BSA, 2023 (corresponding to the former Section 102 of the Indian Evidence Act, 1872) provides that the burden of proof in a suit or proceeding lies on that person who would fail if no evidence at all were given on either side. It complements Section 104 (corresponding to the former Section 101), which requires the party who desires judgment on any legal right or liability to prove the facts which he asserts. Section 106 (corresponding to the former Section 103) deals with the burden of proof as to particular facts, while Section 109 (corresponding to the former Section 106) casts the burden of proving a fact especially within the knowledge of a person, and Section 111 (corresponding to the former Section 108) raises the presumption that a person not heard of for seven years is dead.