अचित्ताददेशकालाट्ठक्

Operational rule vidhi

After a word denoting a thing not having consciousness, but not being the name of a country or time, the affix ठक् is used in the sense of 'this is his object of devotion or love'.

Word by word (padaccheda)

Left context अ- चित्तात् pañcamī · ekavacanaLeft context अ- देश- कालात् pañcamī · ekavacanaSubstitute / term 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.

Pink letters are it-markers (anubandhas), tags dropped by 1.3.9. Hover or tap one for the rule that marks it, or try the it-letter finder.

Full reading

अ-चित्तात् अ-देश-कालात् ठक्

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

Commentary

After a word denoting a thing not having consciousness, but not being the name of a country or time, the affix ठक् is used in the sense of 'this is his object of devotion or love'.
This debars अण्; and छ also. Thus अपूपाभक्तिरस्य = आपूपिकः꣡ 'a person who loves cakes'. शाष्कुलिकः꣡, पायसिकः꣡ ॥

Why do we say 'not having consciousness'? Observe दैवदत्तः꣡ ॥ Why do we say 'not being the name of a country'? Observe स्रौघ्नः꣡ ॥ Why do we say 'not denoting time'? Observe ग्रैष्मः꣡ 'who loves Summer'.

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