3.4.51
प्रमाणे च
Operational rule vidhi
The affix णमुल् comes after a root when a noun in the Instrumental -3rd case or Locative -7th case is in composition with it and when measure of length is intended.
Word by word (padaccheda)
Right context प्रमाणे saptamī · ekavacanaIndeclinable च avyaya
- 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".
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Full reading
प्रमाणे च
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 a root when a noun in the Instrumental -3rd case or Locative -7th case is in composition with it and when measure of length is intended.
The word प्रमाणं means 'length or extension'. Thus द्वयङ्गुलोत्कर्षं ( द्वयङ्गुले उत्कर्षम् or द्वयङ्गुलेनोत्कर्षम्) खण्डिकां छिनत्ति 'he cuts pieces of the length of two fingers'. See 2.2.21.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.