3.2.116
हशश्वतोर्लङ् च
Operational rule vidhi
And the affix लङ् (Imperfect Tense) comes after the verb when the particles ह and शश्वत are in connection with it and when the verb denotes past action unperceived by the speaker and before the commencement of the current day.
Word by word (padaccheda)
Right context ह- शश्वतोः saptamī · dvivacanaSubstitute / term prathamā · ekavacanaIndeclinable च avyaya
- 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").
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
ह-
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 लङ् (Imperfect Tense) comes after the verb when the particles ह and शश्वत are in connection with it and when the verb denotes past action unperceived by the speaker and before the commencement of the current day.
The force of च 'and' is that the affix लिट् (perfect) may also be employed in similar construction. As इति हाकरोत् (imperfect), or इति ह चकार (perfect) 'Alas ! he did it'. शश्वदकरोत् or शश्वच्चकार 'again and again he did it'.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.