Page:Sanskrit Grammar by Whitney p1.djvu/344

 sibilant aorist we may take the roots नी lead, and छिद्  cut off. Thus:

a. From √ obstruct, the 2d and 3d du. and 2d pl. act. and the 2d and 3d sing. mid. would be ; from √ pour out, ; from √ see, etc. (as from ). But from √ do the same persons in the active are ; from √ stretch they are.

883. The omission of in the active persons  is a case of very rare occurrence; all the quotable examples were given above (233 e). As to the like omission in middle persons, see 881. The ChU. has twice for - (√ dwell): this may be viewed as another case of total disappearance of the sibilant, and consequent restoration of the final radical to its original form.