6.3.90
इदङ्किमोरीश्की
Operational rule vidhi
ई is substituted for इदम् and की for किम् before the words 1. दृग् 2. दृश and the affix वत्.
Word by word (padaccheda)
Target इदम्- किमोः ṣaṣṭhī · dvivacanaWord ईश्- की
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Word Case not marked in the source data.
Full reading
इदम्-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
ई is substituted for इदम् and की for किम् before the words 1. दृग् 2. दृश and the affix वत्।
Thus इदृक्, ईदृशः and इयान्, कीदृक्, कीदृशः and कियान् ॥ ईवत् and कीवत् are changed to ई + इयत् and को + इयत् by 5.2.40 and the long ई is elided by 6.4.148 : and we get इयत् and कियत् ॥
Vart:- So also before दृक्ष, as ईदृक्षः and कीदृक्षः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.