7.3.40
भियो हेतुभये षुक्
Operational rule vidhi
The augment षुक् is added to the root भी before the affix णि when fear is caused immediately owing to the agent of the Causative.
Word by word (padaccheda)
Target भियः ṣaṣṭhī · ekavacanaRight context हेतुभये saptamī · ekavacanaSubstitute / term षुक् prathamā · 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").
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
भियः हेतुभये षुक्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
भियः → षुक् / हेतुभये
Replace bhiyaḥ with ṣuk when hetubhaye follows. Inherited words (anuvṛtti) may add further conditions.
Commentary
The augment षुक् is added to the root भी before the affix णि when fear is caused immediately owing to the agent of the Causative.
As मुण्डो भीषयते, जटिलो भीषयते ॥ See 1.3.68. Herealso भी with long ई being employed in the sutra, indicates that षुक् is added then only, when the root has the form भी, but when it assumes the form भा by 6.1.56, the proper augment पुक् will come: as मुण्डो भापयते ॥ Why do we say 'when the agent of the causative is himself the direct cause of fear'? Observe कुञ्चिकयैनं भाययति, for here कुञ्चिका causes fear and not the agent of the verb. The ई is vriddhied and आय substituted.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.