8.3.114
प्रतिस्तब्धनिस्तब्धौ च
Operational rule vidhi
The words प्रतिस्तब्ध and निस्तब्ध are anomalous.
Word by word (padaccheda)
Substitute / term प्रतिस्तब्ध- निस्तब्धौ prathamā · dvivacanaIndeclinable च avyaya
- 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".
Full reading
प्रतिस्तब्ध-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The words प्रतिस्तब्ध and निस्तब्ध are anomalous.
In these words the स is not changed to ष, though so required by 8.3.67.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.