5.4.34
विनयादिभ्यष्ठक्
Operational rule vidhi
The affix ठक् comes without changing the sense after the word विनय etc.
Word by word (padaccheda)
Left context विनयादिभ्यः 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
विनयादिभ्यः ठक्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix ठक् comes without changing the sense after the word विनय etc.
Thus वैनयिकः = विनयः, सामयिकः ॥ The आ of उपाय is shortened, as, औपयिकः ॥ The word अकस्मात् should be read as अकस्माद् in order to apply इक् and not क, as, आकस्मिकः ॥ The टि is elided, because it is an Avyaya. See 6.4.49. The affix is optional by 4.1.82.
1 विनय, 2 समय, 3 उपायो, (उपायाद्) हृस्वत्वं च (औपयिक), 4 संप्रति, 5 संमति, 6 कथंचित्, 7 अकस्मात्, 8 समाचार, 9 उपचार, 10 समयाचार, 11 व्यवहार, 12 संप्रदान, 13 समुत्कर्ष, 14 समूह, 15 विशेष, 16 अत्यय, 17 अस्थि, 18 कण्डु.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.