5.3.3
इदम इश्
Operational rule vidhi
For इदम् there is the substitute इश् when a प्राग्दिशीय affix follows.
Word by word (padaccheda)
Target इदमः ṣaṣṭhī · ekavacanaSubstitute / term इश् prathamā · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- 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
इदमः इश्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
इदमः → इश्
Replace idamaḥ with iś. Inherited words (anuvṛtti) may add further conditions.
Commentary
For इदम् there is the substitute इश् when a प्राग्दिशीय affix follows.
The word प्राग्दिशः is understood here also. The श् of इश् is indicatory of the substitution of the whole (1.1. 55). Thus इदम् + ह 5.3.11 = इह ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.