उपमानाच्च

Operational rule vidhi

The इ is substituted for the final अ of गन्ध at the end of a बहुव्रीहि समास when preceded by a word denoting a thing with which it is compared.

Word by word (padaccheda)

Left context उपमानात् pañcamī · 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.
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

उपमानात् च

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

Commentary

The इ is substituted for the final अ of गन्ध at the end of a बहुव्रीहि समास when preceded by a word denoting a thing with which it is compared.
As पद्मस्येव गन्धोऽस्य = पद्मगन्धिः, उत्पलगन्धिः करीषगन्धिः ॥

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