When fraud, misrepresentation or undue influence is alleged by a party in a suit, normally, the burden is on him to prove such fraud, undue influence or misrepresentation. But when a person is in a fiduciary relationship with another and the latter is in a position of active confidence, the burden of proving the absence of fraud, misrepresentation or undue influence is upon the person in dominating position and he has to prove that there was fair play in the transaction and that the apparent is the real, that the transaction is genuine and bona fide. In such a case the burden of proving the good faith of the transaction is thrown upon the dominant party , that is to say, the party who is in a position of active confidence. A Person standing in a fiduciary relation to another has a duty to protect the interest given to his care and the court watches with jealousy all transactions between such persons so that the protector may not use his influence or the confidence to his advantage. When the party complaining shows such relation, the law presumes everything against the transaction and the onus is cast against the person holding the position of confidence or trust to show that that the transaction is perfectly fair and reasonable, that no advantage has been taken of his position. This principle has been engrained in Section 111 of the Evidence Act, 1872. The rule here laid down is in accordance with a principle long acknowledged and administered in Courts of Equity in England and America. This principle is that he who bargains in a matter of advantage with a person who places confidence in him is bound to show that a proper and reasonable use has been made of that confidence. The transaction is not necessarily void ipso facto nor is it necessary for those who impeach it to establish that there has been fraud or imposition, but the burden of establishing its perfect fairness, adequacy and equity is cast upon the person in whom the confidence has been reposed. The rule applies equally to all persons standing in confidential relations with each other. Agents, trustees, executors, administrators, auctioneers and other have been held to fall within the rule. The section requires that the party on whom the burden o proof is laid should have been in a position of active confidence. Where fraud is alleged, the rule has been clearly established in England that in case of a stranger equity will not set aside a voluntary deed or donation, however improvident it may be, if it be free from the imputation of fraud, surprise, undue influence and spontaneously executed or made by the donor with his eyes open. Where an active confidential, or fiduciary relation exists between the parties, there the burden of proof is on the done or those claiming through him. It has further been laid down that where a person gains a great advantage over another by a voluntary instrument, the burden of proof is thrown upon the person receiving the benefit and he is under the necessity of showing that the transaction is fair and honest. Pratima Chowdhury v. Kalpana Mukherjee, (2014) 4 SCC 196.