उतश्च प्रत्ययादसंयोगपूर्वात्

Operational rule vidhi

The 'हि' प्रत्यय that follows an उकार is deleted, provided - a) The उकार occurs at end of a प्रत्यय, and b) A संयोग is not present immediately before this उकार.

Word by word (padaccheda)

Left context उतः pañcamī · ekavacanaIndeclinable च avyayaLeft context pañcamī · ekavacanaLeft context असंयोगपूर्वात् pañcamī · ekavacana

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

उतः च असंयोगपूर्वात्

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

Commentary

The Imperative affix हि is elided after the उ of an affix in the विकरण with which the Present-अङ्ग (stem) (special conjugation) is made, provided that the उ is not preceded by a conjunct consonant.
The affix उ with which the Present-stem is made is उ and श्नु ॥ Thus चिनु, सुनु, कुरु ॥ Why after 'उ'? Observe लुनीहि, सुनीहि ॥ Why do we say "उ being part of the vikarana or affix"? Observe रुहि, युहि, here उ is part of the root itself, and not of the vikarana. Why de we say 'not preceded by a conjunct consonant'? Observe प्राप्नुहि, राध्नुहि, तक्ष्णुहि ॥

Vart:- The elision of हि after the उ of the vikarana उ and श्नु is optional in the Vedas; as आतनुहि यातुधानान्, धिनुहि यज्ञपतिम्, तेन मा भागिनं कृणुहि ॥

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