5.4.18
द्वित्रिचतुर्भ्यः सुच्
Operational rule vidhi
The affix सुच् (स्) is added to the numerals 1. द्वि 2. त्रि and 3. चतुर् in the sense of counting the repetition of an action.
Word by word (padaccheda)
Left context द्वि- त्रि- चतुर्भ्यः 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
द्वि-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix सुच् (स्) is added to the numerals 1. द्वि 2. त्रि and 3. चतुर् in the sense of counting the repetition of an action.
This debars कृत्वसुच् ॥ Thus द्वि-द्विस्, त्रि-त्रिस्, चतुर्-चतुर् in द्विर्भुङ्क्ते, त्रिर्भुङ्क्ते, चतुर्भुङ्क्ते ॥ The स् in the last example is elided by 8.2.24: but चतुर् meaning "four", and चतुर् meaning "four-times", are differently accented : the च् of सुच् indicating that the accent udatta falls on the last syllable. Thus चतुर् (चतेरुरन् Un V. 58, being formed with the affix 'uran' added to चत्), and चतुर् (with सुच्).
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.