5.3.28
दक्षिणोत्तराभ्यामतसुच्
Operational rule vidhi
The affix अतसुच् (अतस्) comes in the sense of 'direction', 'locality' or 'time' after the words 1. दक्षिण and 2. उत्तर.
Word by word (padaccheda)
Left context दक्षिण- उत्तराभ्याम् pañcamī · dvivacanaSubstitute / term अतसुच् prathamā · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
दक्षिण- उत्तराभ्याम् अतसुच्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix अतसुच् (अतस्) comes in the sense of 'direction', 'locality' or 'time' after the words 1. दक्षिण and 2. उत्तर।
This debars अस्ताति ॥ The word दक्षिणा can never refer to time, so with regard to it direction and locality are only taken. Thus दक्षिणतो वसति, दक्षिणत आगतः, दक्षिणतोरमणीयम् ॥ उत्तरतोवसति, उत्तरत आगतः, उत्तरतोरमणीयम् ॥ The अ of अतस् is for the sake of differentiating this affix from तस् in sutras like 2.3.30.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.