प्रकाशनस्थेयाख्ययोश्च

Operational rule vidhi

The verb स्था gets the प्रत्ययाः of आत्मनेपद when used in the meaning of - (a) Clearing explaining own opinion, and (b) Putting and end to a question / debate.

Word by word (padaccheda)

Right context प्रकाशन- स्थेय- आख्ययोः saptamī · dvivacanaIndeclinable च avyaya

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").
Indeclinable An avyaya such as च "and", वा "optionally", न "not".

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Full reading

प्रकाशन-स्थेय-आख्ययोः च

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

Commentary

After the verb स्था 'when meaning to indicate one's intentions to another', or 'to make an award as an arbitrator', the आत्मनेपद affix is employed.
The word prakasana means disclosing one's intentions. The word stheyakhya is a compound of stheya 'arbitrator; and akhya 'name.'

As तिष्ठते जायापत्ये 'the wife expresses her wish to the husband;' त्वयितिष्ठते 'he refers to thee for settlement;' संशय्य कर्णादिषु तिष्ठते यः, 'who, when he is in doubt, has recourse to Karna as his judge or umpire.'

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