3.3.110
विभाषाऽऽख्यानपरिप्रश्नयोरिञ् च
Operational rule vidhi
And the affix इञ् comes optionally after a root when a question and answer is expressed (as well as ण्वुल् and other affixes ordained by other rules).
Word by word (padaccheda)
Substitute / term prathamā · ekavacanaRight context आख्यान- परिप्रश्नयोः saptamī · dvivacanaRight context इञ् saptamī · dvivacanaIndeclinable च avyaya
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Right context Saptamī (7th case): "when X follows", the operation applies to what precedes (1.1.66 तस्मिन्निति निर्दिष्टे पूर्वस्य). Also a condition or domain ("in the sense of").
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
आख्यान- परिप्रश्नयोः इञ् च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
And the affix इञ् comes optionally after a root when a question and answer is expressed (as well as ण्वुल् and other affixes ordained by other rules).
The word परिप्रश्न means 'question' and आख्यान means 'answer'; in the sutra, in making the compound of these words, the logical sequence is not observed. The compound आख्यानपरिप्रश्न may, however, be justified on the ground that in a Compound a word consisting of smaller number of syllables should stand first 2.2.34 and hence akhyana is put first.
The force of च is to draw the anuvritti of the word ण्वुल् from the last into this. By the word 'optionally', it is meant that those affixes which would otherwise present themselves from the subsequent rules, should also be applied; thus: Q.—कां त्वं कारिमकार्षीः 'What work did you do'? A.—सर्वां कारिमकार्षम् 'I did all work'. Optionally we may have instead of कारि the following also. Q.—कां कारिकां, कृत्यां, कृतिं, क्रियां, अकार्षीः A.— सर्वां कारिकां or कृत्यां or कृतिं or क्रियां अकार्षम् । Similarly, Q.—कां गणिं (गणनां, गणिकां &c.) अजीगणः A.— सर्वाङ्गणिं &c. अजीगणम्. So also कां याजिम् or याजिकाम्; कां याचिम् or याचिकां &c.
Why do we say 'in question and answer'? Observe कृतिः and हृतिः ।
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.