8.4.42
न पदान्ताट्टोरनाम्
Operational rule vidhi
Except when followed by the प्रत्यय नाम्, a पदान्तटवर्ग letter does not cause the ष्टुत्वम् of सकार or a तवर्ग letter that follows it.
Word by word (padaccheda)
Indeclinable न avyayaLeft context पदान्तात् pañcamī · ekavacanaLeft context टोः pañcamī · ekavacanaWord अनाम्
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Word Case not marked in the source data.
Full reading
न पदान्तात् टोः अनाम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
After टु final in a पद , the change of a dental (स्तु) to a cerebral (ष्टु), does not take place, except in the case of the affix नाम्।
Thus श्वलिट् + साये = श्वलिट्साये, मधुलिट्साये, श्वलिट्तरति, मधुलिट्तरति ॥
Why do we say पदान्तात् 'final in a Pada'? Observe ईड् + ते = ईड् + टे = ईट्टे ॥
Why do we say टोः 'after टु' Observe सर्पिष् + तमम् = सर्पिष्टमम् ॥
Why do we say अनाम् 'except in the case of the affix nam'? Observe षट् + नाम् = षण्णाम् ॥ This exception is very inadequate. Hence the following
Vart:- It should be stated rather that नवति and नगरी as well as नाम् are not prevented from undergoing the cerebral change. As, षण्णाम् 'of six', षण्णवतिः ninety-six, and षण्णगरी 'six cities.'
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.