तनोतेर्यकि

Operational rule vidhi

The long आ is optionally substituted for the final of तन् before the Passive characteristic यक्.

Word by word (padaccheda)

Target तनोतेः ṣaṣṭhī · ekavacanaRight context यकि 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. Hover or tap one to see its card.

Full reading

तनोतेः यकि

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

Commentary

The long आ is optionally substituted for the final of तन् before the Passive characteristic यक्।
Thus तायते or तन्यते; but no option is allowed in तन्तन्यते with यङ् ॥

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