5.2.58
षष्ट्यादेश्चासंख्यादेः
Operational rule vidhi
After the words षष्ठी etc. when no other Numeral precedes them; तमट् is always the augment of डट्.
Word by word (padaccheda)
Left context षष्टि- आदेः pañcamī · ekavacanaIndeclinable च avyayaLeft context असङ्ख्या- आदेः pañcamī · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
षष्टि-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
After the words षष्ठी etc. when no other Numeral precedes them; तमट् is always the augment of डट्।
By sutra 5.2.56, the augment was optional, this makes it compulsary. Thus षष्टितमः, सप्ततितमः ॥
Why do we say "when not preceded by a Numeral"? Observe, एकषष्टः एकषष्टितमः, एकसप्तमः or एकसप्ततितमः ॥ Here 5.2.56, applies also.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.