4.2.105
ऐषमोह्यःश्वसोऽन्यतरस्याम्
Operational rule vidhi
The affix त्यप् is added optionally after the words 1. ऐषमस् 2. ह्यस् and 3. श्वस् , in the remaining senses.
Word by word (padaccheda)
Left context ऐषमस्- ह्यस्- श्वसः pañcamī · ekavacanaRight context अन्यतरस्याम् saptamī · ekavacana
- 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
ऐषमस्-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix त्यप् is added optionally after the words 1. ऐषमस् 2. ह्यस् and 3. श्वस् , in the remaining senses.
As ऐषमस्त्यम् or ऐषमस्तनम् 4.3.23, ह्यस्त्यम् or ह्यस्तनम् 4.3.23; श्वस्त्यम् or श्वस्तनम् 4.3.23 or शौवस्तिकम् 4.3.15. The word 'svas' takes the augment तुट् also, hence the above three forms.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.