Section 109 of Evidence Act "Burden of proof as to relationship in the cases of partners, landlord and tenant, principal and agent"
When the question is whether persons are partners, landlord and tenant, or principal and agent, and it has been shown that they have been acting as such, the burden of proving that they do not stand, or have ceased to stand, to each other in those relationships respectively, is on the person who affirms it.
Section 110 of Evidence Act "Burden of proof as to ownership"
When the question is whether any person is owner of anything of which he is shown to be in possession, the burden of proving that he is not the owner is on the person who affirms that he is not the owner.