The affix ṇi is elided before the affixes kta and ktavatu when these take the augment iṭ ,
Thus कारितम्, हारितम्, गणितम्, लक्षितम् ॥ Why do we say \before an ardhadhatuka affix having the augment इट्\? Observe संज्ञपितः पशुः ॥ This is the part participle of the causative, the इ being the sign of the causative. By 7.2.15 read with 7.2.49, ज्ञप् is a root which takes no इट् augment in the Nishtha. It may be objected that 7.2.15 preventing इट् augment applies to verbs of one syllable 7.2.10, and the causative ज्ञपि being of two syllables will always have इट् in the Nishtha, and so it is useless to use the word सेटि in the sutra. The word सेटि in the sutra fixes the time when the elision of णि should take place. Namely, first there should be added the augment इट् and then, there should take place the elision of णि ॥ Otherwise we shall have this difficulty कारि + त, here let us elide the णि first : and we get कार् + त, now we cannot add इट् to त, for कार् being a verb of one syllable will not take इट् by 7.2.10. Therefore, the reverse process must be adopted. We must elide इट् first. For ज्ञपितः see also 7.2.27.,