दुहः कब् घश्च

Operational rule vidhi

The affix कप् comes after the verb दुह् 'to milk' when in composition with a word ending in a case-affix and the letter घ replaces the final.

Word by word (padaccheda)

Left context दुहः pañcamī · ekavacanaSubstitute / term कप् prathamā · ekavacanaSubstitute / term ः prathamā · ekavacanaIndeclinable च avyaya

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.
Indeclinable An avyaya such as च "and", वा "optionally", न "not".

Dotted words are technical terms, dashed ones pratyāhāras (names for classes of sounds or affixes). 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

दुहः कप् घः 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 कप् comes after the verb दुह् 'to milk' when in composition with a word ending in a case-affix and the letter घ replaces the final.
As कामदुघा धेनुः 'a milch cow, giving abundance of milk'; so also अर्थदुघा, धर्मदुघा ।

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