7.3.82
मिदेर्गुणः
Operational rule vidhi
For इ in मिद् there is substituted a गुण before a शित् affix.
Word by word (padaccheda)
Target मिदेः ṣaṣṭhī · ekavacanaSubstitute / term 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.
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Full reading
मिदेः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
मिदेः →
Replace mideḥ with guṇaḥ. Inherited words (anuvṛtti) may add further conditions.
Commentary
For इ in मिद् there is substituted a गुण before a शित् affix.
As मेद्यति, मेद्यतः, मेद्यन्ति ॥ Why मिद् only? Observe स्विद्यन्ति, क्लिद्यन्ति ॥ The root ञिमिदा belongs both to the Bhvadi and the Divadi classes. The Bhvadi मिद् will get guna before शप् by virtue of 7.3.86, but the Divadi मिद् would not have got guna before श्यन्, as this affix is ङित् 1.2.4: hence the necessity of this sutra. Before non शित् affixes there is no guna, as मिद्यते, मेमिद्यते ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.