6.4.138
अचः
Operational rule vidhi
The अकार of the word अच् that occurs at end of a भसंज्ञक अङ्ग is omitted if this 'अच्' happens to be derived from the धातु अञ्च् (गतौ).
Word by word (padaccheda)
Target अचः ṣaṣṭhī · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
अचः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The अ of अच् (अञ्च् ) is elided at the end of a भ अङ्ग (stem).
Thus दधीचः पश्य, दधीचा, दधीचे, मधूचः पश्य, मधूचा, मधूचे ॥ The lengthening of the first member takes place by 6.3.138: and न् of अञ्च is elided by 6.4.24.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.