status of justice of witness and the ways of proving it in litigations by emphasis on weakening and modification

testimony is one of the most important reasons that legislator has accounted for proving the litigation and it is of special importance. witness is the most important pillar of testimony. due to great and special influence of testimony to prove or disprove the litigations, it is necessary to qualify the witness. one of the most important qualifications of the witness is his justice. justice is an internal state that keeps the person away from the various sins. at first the justice of the witness must be qualified through judge's science. if the judge's science was not enough to prove the justice of the witness, two other iust witnesses should prove or reject the justice of the witness. otherwise, the estefazeh and shia' can be used to prove the justice of the witness. if the justice of the witness was proved or rejected by means of one of the above-mentioned ways, the judge can issue the final vote.