8.3.26
हे मपरे वा
Operational rule vidhi
In the context of संहिता, if a पदान्तमकार is followed by 'ह् + म्' then that पदान्तमकार is optionally converted to मकार.
Word by word (padaccheda)
Right context हे saptamī · ekavacanaRight context मपरे saptamī · ekavacanaIndeclinable वा 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
हे मपरे वा
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
म् is optionally substituted for म् before ह which itself is followed by म्।
The म् may be changed to anusvara or remain unchanged before a word beginning with ह्म ॥ Thus किं or किम् ह्मलयति, 'what does because to shake'? कथं ह्मलयति or कथम् ह्मलयति ॥
Vart:- Before ह्म, ह्व, and ह्ल, the preceding म् may be changed to य, व or ल respectively. Thus किं ह्यः or किय्ँह्यः, 'what does it matter about yesterday'? किं ह्वलयति or किव्ँ ह्वलयति 'what does he cause to shake'? किं ह्लादयति or किल्ँ ह्लादयति 'what gladdens'.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.