तीषसहलुभरुषरिषः

Operational rule vidhi

An आर्धधातुक affix beginning with a त may optionally take the इट् affix after the roots 1. इष् 2. सह् 3. लुभ् 4. रुष् and 5. रिष्.

Word by word (padaccheda)

Right context ति saptamī · ekavacanaLeft context इषसहलुभरुषरिषः pañcamī · ekavacana

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").
Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.

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

Full reading

ति इषसहलुभरुषरिषः

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

Commentary

An आर्धधातुक affix beginning with a त may optionally take the इट् affix after the roots 1. इष् 2. सह् 3. लुभ् 4. रुष् and 5. रिष्।
As एष्टा or एषिता ॥ The इष् 'to wish' (VI.59) is taken here, and not the इष् (IV. 19. IX. 53) of the Divadi and Kryadi class. Of the Divadi इष् 'to send, to go ' we have invariably प्रेषिता, प्रेषितुं, प्रेषितव्यं; and the इष् 'to repeat' of the Kryadi is governed also by this rule and has the same forms. Therefore some read the anuvritti of उदित् into this sutra. सह । सोढा । सहिता । लुभ । लोभिता । लोब्धा । रुष । रोष्टा । रोषिता । रिष् । रेष्टा । रेषिता ॥ Why do we say 'beginning with a त' ? Observe एषिष्यति ॥

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