6.1.195
अचः कर्तृयकि
Operational rule vidhi
The roots which are exhibited in धातुपाठ with a final vowel, may be optionally have the acute on the first syllable, before the affixes of the Passive (यक्), when the sense of the verb is Reflexive.
Word by word (padaccheda)
Target ṣaṣṭhī · ekavacanaRight context कर्तृयकि saptamī · ekavacana
- 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
कर्तृयकि
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The roots which are exhibited in धातुपाठ with a final vowel, may be optionally have the acute on the first syllable, before the affixes of the Passive (यक्), when the sense of the verb is Reflexive.
The word उपदेश is understood here. Thus लू꣡यते or लूय꣡ते केदारः स्वयमेव ॥ स्ती꣡र्यते or स्तीर्य꣡ते केदारः स्वयमेव ॥ When the accent does not fall on the first syllable, it falls on य 6.1.186. This rule applies to जन्, खन् , and सन् when they get the form जायते, सायते and खायते; the long आ 6.4.43 substitute is considered as if these verbs were taught in the Dhatupatha with long आ ॥ Thus जा꣡यते or जाय꣡ते स्वयमेव सा꣡यते or सा꣡यते स्वयमेव; खा꣡यते or खाय꣡ते स्वयमेय ॥ Why do we say 'when ending in a vowel'? Observe भिद्य꣡ते स्वयमेव ॥ Why do we say "when the sense is Reflexive (कर्तृ)"? Observe लू꣡यते केदारो देवदत्तेन ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.