8.4.4
वनं पुरगामिश्रकासिध्रकाशारिकाकोटराऽग्रेभ्यः
Operational rule vidhi
The न of वन , is changed into ण , when preceded by the words पुरगा , मिश्रका , सिध्रका , शारिका , कोटरा and अग्रे , as first members of the compound, and the whole compound is a name.
Word by word (padaccheda)
Substitute / term वनम् prathamā · ekavacanaLeft context पुरगा- मिश्रका- सिध्रका- शारिका- कोटरा- अग्रेभ्यः pañcamī · bahuvacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
Full reading
वनम् पुरगा-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The न of वन , is changed into ण , when preceded by the words पुरगा , मिश्रका , सिध्रका , शारिका , कोटरा and अग्रे , as first members of the compound, and the whole compound is a name.
The words पूर्वपदात् and संज्ञायाम् of the last sutra, are to be read into this aphorism. Thus पुरगावणम्, मिश्रकावणम्, सिध्रकावणं, कोटरावणम्, अग्रेवणम् 2.2.31 शारिकावणम् ॥
The lengthening of the finals in the above is by 6.3.117. Though the word अग्रेवणं is not a Name, yet the rule 6.3.9, applies to it and the case-affix is not elided, because it is so read in Rajadantadi list 2.2.31.
The substitution of ण for न would have taken place by the preceding rule. The separate enunciation of the rule with regard to the word वन, shows that this is a restrictive or नियम rule. The न of वन is changed into ण, when preceded by these words only and no other. Thus कुबेरवनं, शतधारवनम्, असिपत्रवनम् ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.