3.4.39
हस्ते वर्त्तिग्रहोः
Operational rule vidhi
The affix णमुल् comes after the verbs वर्त्ति (the causative of वृत्) and ग्रह् 'to seize' when a word denoting 'hand' in the Instrumental -3rd case, is in composition.
Word by word (padaccheda)
Right context हस्ते saptamī · ekavacanaTarget वर्त्ति- ग्रहोः 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").
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
हस्ते वर्त्ति-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix णमुल् comes after the verbs वर्त्ति (the causative of वृत्) and ग्रह् 'to seize' when a word denoting 'hand' in the Instrumental -3rd case, is in composition.
Thus हस्तवर्ते, करवर्ते or पाणिवर्ते वर्तयति = हस्तेन वर्तयति 'he revolves by the hand'. So also, तम् हस्तग्राहम् गृह्णाति 'he takes him by the hand': so पाणिग्राहम्, करग्राहम् &c.
Here also rule 3.4.46 applies and appropriate verbs from the same roots must be employed to govern the gerund.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.