4.4.98
तत्र साधुः
Operational rule vidhi
The affix यत् comes in the sense of 'excellent in regard thereto' after a word in the Locative -7th case in construction.
Word by word (padaccheda)
Indeclinable तत्र avyayaSubstitute / term साधुः prathamā · ekavacana
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
- 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.
Full reading
तत्र साधुः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix यत् comes in the sense of 'excellent in regard thereto' after a word in the Locative -7th case in construction.
Thus सामसु साधुः = सामन्यः॑ 6.4.168 'conversant with the Sama-Veda'. So also वेमन्यः, कर्मण्यः, शरन्यः &c. The word साधु here means प्रवीण, or योग्य 'expert' and 'fit', and does not mean उपकारक 'a benefactor or a good person'. When the sense is that of 'good', the sutra तस्मै हितम् 5.1.5 will apply.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.