नः क्ये

The word-form ending in न् , is called पद when क्य follows (i.e. the affixes क्यच् , क्यङ् and क्यष्।
These are affixes by which denominative verbs are formed from nouns. See 3.1.8, 3.1.11, and 3.1.13. A word ending in न is called pada, when these affixes follow. Thus राजन् + क्यच् = राजीय 3rd Per. 8. राजीयति he behaves like a king. So also राजन् + क्यङ् = राजायते 7.4.5 चर्मन् + क्यष् = चर्मायते or चर्मायति. The result of its being called pada is that the न् of राजन्, चर्मन् &c., is elided by Sutra 8.2.7. (there is elision of न् final in a pada which is entitled to the designation of pratipadika). Thus राजन् + क्यच् = राज + य = राजीय 7.4.33.

These three affixes क्यच् &c., come after case-inflected words (i.e., words ending in sup), and though, before these affixes, the case terminations are elided, still by Sutra 1.1.62 such words would have retained the name of pada which they got by Rule 14 of this Chapter. The present sutra however makes a restriction (niyama). It declares that only words ending in न् retain the name of pada; while all other case-inflected words before these affixes do not retain that designation. Thus the words वाच् speech, स्रुच् a ladle are not treated as pada and we have वाच्यते and स्रुच्यते. Had they been pada, the च् would have been changed into क् by 8.2.30.