अधिकरणविचाले च

Operational rule vidhi

The affix धा comes after a Numeral when the sense is a change in the apportionment or distribution of substances.

Word by word (padaccheda)

Right context अधिकरणविचाले saptamī · ekavacanaIndeclinable च 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".

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

Full reading

अधिकरणविचाले च

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

Commentary

The affix धा comes after a Numeral when the sense is a change in the apportionment or distribution of substances.
The word संख्यायाः is understood here. The word अधिकरणं means 'matter, stuff, substance'. विचालः 'change in numbers'. Thus to make one into many, or to make many into one. Thus एकं राशिं कुरु 'divide one heap into five'. अष्टधा कुरु, अनेकमेकधा कुरु ॥

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