5.4.45
अपादाने चाहीयरुहोः
Operational rule vidhi
The affix तसि comes after that Ablative -5th case which has the force of an अपादान कारक when this अपादान relation arises owing to the union with the verbs हीय (passive of हा) and रुह.
Word by word (padaccheda)
Right context saptamī · ekavacanaIndeclinable च avyayaTarget अ- हीय- रुहोः ṣaṣṭhī · dvivacana
- 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".
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
च अ-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix तसि comes after that Ablative -5th case which has the force of an अपादान कारक when this अपादान relation arises owing to the union with the verbs हीय (passive of हा) and रुह।
Thus ग्रामतः आगच्छति or ग्रामात्, so also चोरतः or चोरतो बिभेति, अध्ययनतः or अध्ययनात् पराजयते ॥ See Sutras (l. 4.24), 1.4.25, and 1.4.26 &c. Not so when the verbs हीय and रुह govern the ablative : as, सार्थात् हीयते, पर्वताद् अवरोहति ॥ The form हीय is given in the sutra to indicate that the verb हा whose present tense is जहाति is to be taken, and not जिहीति ॥ Thus we have भूमितः उज्जिहीते or भूमेरुज्जिहीते ॥ How do you explain the use of "tasi" in the following well-known verse: "मन्त्रो हीनः स्वरतो वर्णतो वा"? The words here are not in the ablative, but in the Instrumental case i. e. स्वरेण वर्णेन वा हीनः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.