Grammatical Sūtra: अवोदोर्नियः avodorniyaḥ 
Individual Word Components: avodoḥ niyaḥ
Sūtra with anuvṛtti words: avodoḥ niyaḥ pratyayaḥ (3.1.1), paraḥ (3.1.2), ca (3.1.2), ādyudāttaḥ (3.1.3), ca (3.1.3), dhātoḥ (3.1.91), kṛt (3.1.93), kriyāyām (3.3.10), kriyārthāyām (3.3.10), ghañ (3.3.16), bhāve (3.3.18), akartari (3.3.19), ca (3.3.19), kārake (3.3.19), saṃjñāyām (3.3.19)
Type of Rule: vidhi
Preceding adhikāra rule:3.2.134 (1ā kveḥ tacchīlataddharmatatsādhukāriṣu)
Description:
The affix 'ghañ' comes after the verb 'nû' (to lead) when the prepositions 'ava' and 'ut' are in composition. Source: Aṣṭādhyāyī 2.0
[The kŕt 1.93 affix 1.1 GHaÑ 16 is introduced after 1.2 the verbal stem 1.91] nī- `lead' (I 950), co-occurring with preverbs áva-° or ud-° [to derive an action noun 18 to denote a kāraka other than the agent 19]. Source: From Aṣṭādhyāyī of Pāṇini In Roman Transliteration translated by Sumitra M. Katre, Copyright © 1987. Courtesy of the University of Texas Press.