7.3.83
जुसि च
Operational rule vidhi
Before a personal ending जुस् (उस्) of the Imperfect, गुण is substituted for the final 1. इ 2. ई 3. उ. 4. ऊ 5. ऋ 6. ॠ and 7. ऌ.
Word by word (padaccheda)
Right context जुसि 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".
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Full reading
जुसि च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
Before a personal ending जुस् (उस्) of the Imperfect, गुण is substituted for the final 1. इ 2. ई 3. उ. 4. ऊ 5. ऋ 6. ॠ and 7. ऌ।
As अजुहवुः, अबिभयुः, अबिभरुः, अजागरुः ॥ This Personal ending is ङित् according to 1.2.4, and would not have caused guna 1.1.5, but for this sutra. The ending जुस (III.4. I08) comes in the लिङ् also. There, however, it does not cause guna. As चिन्युः, सुनुयुः ॥ Here there are two ङित् affixes, the augment यासुट्, and the sarvadhatuka जुस्; and the यासुट् prevents guna. The इक् is read into the sutra from 1.1.3.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.