particular incidence there may occur minor discrepancies, such discrepancies in law may render credential to the depositions. Parrot like statements are disfavoured by the courts. In order to ascertain as to whether the discrepancy pointed out was minor or not or the same amounted to contradiction, regard is required to be had to the circumstances of the case by keeping in view the social status of the witnesses and environment in which such witness was making the statement. This Court in Ousu Varghese v. State of Kerala, [1974] 3 SCC 767, held that minor variations in the accounts of the witnesses are often the hallmark of the truth of their testimony. In Jagdish v. State of Madhya Pradesh, [1981] SCC (Crl.) 676, this Court held that when the discrepancies were comparatively of a minor character and did not go to the root of the prosecution story, they need not be given undue importance. Mere congruity or consistency is not the sole test of truth in the depositions. This Court again in State of Rajasthan v, Kalki & Anr., [1981] 2 SCC 752 held that in the depositions of witnesses there are always normal discrepancy, however, honest and truthful they may be. Such discrepancies are due to normal errors of observation, normal errors of memory due to lapse of time, due to mental disposition such as shock and horror at the time of occurrence, and the like. Material discrepancies are those which are not normal, and not expected of a normal person.