दक्षिणापश्चात्पुरसस्त्यक्

Operational rule vidhi

The words 1. दक्षिणा 2. पश्चात् and 3. पुरस् the affix त्यक् (त्य) is added in the remaining senses.

Word by word (padaccheda)

Left context दक्षिणा- पश्चात्- पुरसः pañcamī · ekavacanaSubstitute / term त्यक् 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.

Dotted words are technical terms. Hover or tap one to see its card.

Full reading

दक्षिणा-पश्चात्-पुरसः त्यक्

Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.

Commentary

The words 1. दक्षिणा 2. पश्चात् and 3. पुरस् the affix त्यक् (त्य) is added in the remaining senses.
As दाक्षिणात्यः 'pertaining or produced in the south'; पाश्चात्यः 'occidental', पौरस्त्यः 'oriental'.

Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.