3.1.140
ज्वलितिकसन्तेभ्यो णः
Operational rule vidhi
After the verbs beginning with ज्वल 'to shine' and ending with कस 'to go', when used without a preposition, the affix ण is optionally used.
Word by word (padaccheda)
Left context ज्वलिति- कसन्तेभ्यः pañcamī · bahuvacanaSubstitute / term ः prathamā · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
ज्वलिति-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
After the verbs beginning with ज्वल 'to shine' and ending with कस 'to go', when used without a preposition, the affix ण is optionally used.
The word इति in ज्वलति indicates beginning. These are about 56 verbs, all belonging to the Bhvadi class. See No. 804 to 860 in the Dhatupatha, Bombay Edition in the Appendix to Sidhanta Kaumudi.
This debars the affix अच्; as ज्वालः or ज्वलः; चालः or चलः.
The affix ण (अ) having an indicatory ण्, causes the vriddhi of the penultimate अ. When the affix ण is not used, then अच् is used and we have the other form. But compound verbs take अच्; as प्रज्वलः 'luminous'.
Vart:- The verb तन 'to stretch' must be included in this list, and it takes the affix ण; as अवतान. The conditions 'option' and 'without preposition' do not apply in this case. The verb तन् necessarily takes this affix, though compounded with an upasarga.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.