8.4.62
झयो होऽन्यतरस्याम्
Operational rule vidhi
A हकार following a झय् letter is optionally converted to the पूर्वसवर्ण (i.e. वर्गचतुर्थ).
Word by word (padaccheda)
Left context pañcamī · ekavacanaTarget हः ṣaṣṭhī · ekavacanaRight context अन्यतरस्याम् saptamī · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Right context Saptamī (7th case): "when X follows", the operation applies to what precedes (1.1.66 तस्मिन्निति निर्दिष्टे पूर्वस्य). Also a condition or domain ("in the sense of").
Dotted words are technical terms, dashed ones pratyāhāras (names for classes of sounds or affixes). Hover or tap one to see its card.
Full reading
हः अन्यतरस्याम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In the room of ह after (a sonant Mute) there is optionally a letter homogenous with the prior.
The pratyahara झय् includes all Mutes. But practically sonant Mutes are only taken here.
As वाक् + हसति = वाग्घसति or वाग् हसति, श्वलिड् ढसति or हसति, अग्निचिद् धसति or हसति, त्रिष्टुब् भसति or हसति, सोमसुद् धसति or सोमसुद् हसति ॥
Why do we say झयः 'after a sonant Mute?' Observe प्राङ् हसति, भवान् हसति ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.