7.1.67
उपसर्गात् खल्घञोः
Operational rule vidhi
The verb root लभ् gets a नुमागम in presence of खल्-प्रत्यय and घञ्-प्रत्यय (only when) it is attached to an उपसर्ग .
Word by word (padaccheda)
Left context pañcamī · ekavacanaRight context खल्- घञोः saptamī · dvivacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- 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").
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Full reading
खल्-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The augment नुम् is added to लभ् 'to get' preceded by a Preposition before the affixes खल् -- ईषद्दुःसुषु कृच्छ्राकृच्छ्रार्थेषु खल् 3.3.126, and घञ्।
Thus ईषत्प्रलम्भः, सुप्रलम्भः, दुष्प्रलम्भः, प्रलम्भः, विप्रलम्भः ॥ This is a Niyama rule, and restricts the scope of 7.1.64. Before the vowel affixes खल् and घञ्, the root लभ् gets the augment नुम् only then when it is preceded by a Preposition, and not otherwise, as ईषल्लभः, लाभो वर्तते ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.