झयः

Operational rule vidhi

The affix टच् comes optionally after an अव्ययीभाव समास ending in a letter of झय् class (a mute letter).

Word by word (padaccheda)

Left context pañcamī · ekavacana

Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.

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

Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.

Commentary

The affix टच् comes optionally after an अव्ययीभाव समास ending in a letter of झय् class (a mute letter).
The झय् here means the pratyahara झय् i.e. all the Mute consonants. Thus उपसमिधम्, or उपसमित्, उपदृषदम् or उपदृषत् ॥

Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.