8.2.17
नाद्घस्य
Operational rule vidhi
In the छन्दस् (Vedas) the affixes तर and तम get the augment नुट् after a stem in न्.
Word by word (padaccheda)
Left context नात् pañcamī · ekavacanaTarget ṣaṣṭhī · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
नात्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In the छन्दस् (Vedas) the affixes तर and तम get the augment नुट् after a stem in न्।
The affixes तरप् and तमप् are called घ ॥ Thus सुपथिन् + तर = सुपथि + तर 8.2.7 = सुपथि + न्तर 8.2.17 = सुपथिन्तरः ॥ So also दस्युहन्तमः ॥
Vart:- The augment तुट् is added to these affixes after भूरिदावन्; as भूरिदावत्तरः (3.2.74, the affix is वनिप्).
Vart:- Long ई is the substitute of the final of रथिन् before तर and तम ॥ The word रथिन् is formed by the affix इनि in the sense of मतुप् ॥ The final न् is first elided by 8.2.7, and then for the short इ of रथि the long ई is substituted by the present vartika. If the long ई were substituted for the final न् of रथिन् as रथिई + तर, then this long ई being asiddha, it could not be compounded by ekadesa with the preceding इ into ई, and the form would always remain रथिईतरः ॥ As रथीतरः, and रथीतमं रथीनाम् ॥ Or this ई may be considered to have come after रथ in the sense of मतुप् ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.