The affix kvip comes in the sense of 'agent having such a habit etc.' after the verbs 1. bhrāja 'to shine' 2. bhās 'to shine' 3. dhurva 'to injure' 4. dyut 'to shine' 5. ūrja 'to be strong' 6. pṝ 'to fill' 7. ju 'to move rapidly' 8. stu 'to praise', when preceded by the word gravan 'a stone'.,
Thus, विभ्राज् Ist. sing. विभ्राट् 'splendid'; भास् Ist. sing. भाः 'light'; धुर्व् + क्विप् = धुर् 6.4.21, Ist sing. धूः 'who injures'; विद्युत् 'lightening'; ऊर्ज Ist. sing. कर्क् 'strength'; पुर् Ist. sing. पूः 'what fills'; जूः 'swift'. In the case of जु, a long vowel is the substitute of जु; ग्रावस्तुत् (VI. I. 71) 'a stone-worshipper'. Though by the universal rule 3.2.76, the affix क्विप् would have come after these verbs also, the repetition of the affix shows that वाऽसरूपविधि does not apply in tachchhilika affixes.,