and jajastám (all RV. only), and perhaps suṣūdáta (AV.), are to be referred hither, as corresponding to the indicatives (without union-vowel) ajīgar and adīdhar: their short reduplicating vowel and their accent assimilate them closely to the reduplicated imperfects (656 ff.) with which we are probably to regard this aorist as ultimately related.
872. No participle is found belonging to the reduplicated aorist.
873. The number of roots from which this aorist is met with in the earlier language is about a hundred and twenty. In the later Sanskrit it is unusual; in the series of later texts mentioned above (826) it occurs only twice; and it has been found quotable from hardly fifty roots in the whole epic and classical literature.
III. Sigmatic or Sibilant Aorist.
874. a. The common tense-sign of all the varieties of this aorist is a स् s (convertible to ष् ṣ: 180) which is added to the root in forming the tense-stem.
b. This sibilant has no analogues among the class-signs of the present-system; but it is to be compared with that which appears (and likewise with or without the same union-vowel i) in the stems of the future tense-system (932 ff.) and of the desiderative conjugation (1027 ff.).
c. To the root thus increased the augment is prefixed and the secondary endings are added.
875. In the case of a few roots, the sibilant tense-stem (always ending in क्ष् kṣ) is further increased by an अ a, and the inflection is nearly like that of an imperfect of the second or a- conjugation.
876. a. In the vast majority of cases, the sibilant is the final of the tense-stem, and the inflection is like that of an imperfect of the first or non-a-conjugation.
b. And these, again, fall into two nearly equal and strongly marked classes, according as the sibilant is added immediately to the final of the root, or with an auxiliary vowel इ i, making the tense-sign इष् iṣ. Finally, before this इष् iṣ the root is in a very small number of cases increased by a स् s, making the whole addition सिष् siṣ.
