Before the affix as of the Nominative 1st-Case plural guṇa is substituted for the final short vowel of a Nominal-stem.,
As अग्नयः, वायवः, पटवः, धेनवः, बुद्धयः ॥
Vart:- All these rules upto the end of this chapter are of optional application in the Veda. As अम्बे or अम्ब, पूर्णा दर्वि or पूर्णा दर्वी, अधा शतक्रत्वः or शतक्रतवः, पश्वे भृत्यः or पशवे भृत्यः, किकिदीष्या or किकिदीविना ॥
The forms दर्वि and दर्वी could have been regularly obtained by the optional use of ङीष् (कृदिकारादक्तिनः) ॥ शतक्रत्वः is formed by adding अस् to शतक्रतु without guna of उ, and उ being changed to व् ॥ The rule of lengthening the prior vowel 6.1.102 which would have otherwise come, in the absence of guna does not take place, as a Vedic option (VI. I. 106). किकिदीव्या is the Instrumental singular, the ना of 7.3.120 does not come. The word किकिदीवि is formed by Unadi nipatan (कृविधृष्वि &c Unadi IV. 56).,