4.3.72
द्व्यजृद्ब्राह्मणर्क्प्रथमाध्वरपुरश्चरणनामाख्याताट्ठक्
Operational rule vidhi
The affix ठक् comes in the sense of 'occurring therein' or 'commentary thereon' after a word of two syllables and a word ending in short ऋ and the words 1. ब्राह्मण 2. ऋक् 3. प्रथम 4. पुरश्चरण 5. नाम 6. आख्यात and 7. नामाख्यात being the names of explainable works.
Word by word (padaccheda)
Left context द्व्यच्- ऋत्- ब्राह्मण- ऋक्- - अध्वर- पुरश्चरण- नाम- आख्यातात् pañcamī · ekavacanaSubstitute / 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.
Dotted words are technical terms. Hover or tap one to see its card.
Pink letters are it-markers (anubandhas), tags dropped by 1.3.9. Hover or tap one for the rule that marks it, or try the it-letter finder.
Full reading
द्व्यच्-
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 in the sense of 'occurring therein' or 'commentary thereon' after a word of two syllables and a word ending in short ऋ and the words 1. ब्राह्मण 2. ऋक् 3. प्रथम 4. पुरश्चरण 5. नाम 6. आख्यात and 7. नामाख्यात being the names of explainable works.
This debars अण् and ठञ् ॥ I.Dissyllabic:- ऐष्टिकः, पाशुकः ॥ 2. Ending in ऋ :- चातुर्होतृकः, पांचहोतृकः ॥ So also ब्राह्मणिकः, आर्चिकः, प्राथमिकः, आध्वरिकः, पौरश्चरणिकः, नामिकः, आख्यातिकः, नामाख्यातिकः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.