Grammatical Sūtra: नौ गदनदपठस्वनः nau gadanadapaṭhasvanaḥ
Individual Word Components: nau gadanadapaṭhasvanaḥ
Sūtra with anuvṛtti words: nau gadanadapaṭhasvanaḥ 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), bhāve (3.3.18), akartari (3.3.19), ca (3.3.19), kārake (3.3.19), saṃjñāyām (3.3.19), ap (3.3.57), anupasarge (3.3.61), vā (3.3.62)
Type of Rule: vidhi
Preceding adhikāra rule:3.2.134 (1ā kveḥ tacchīlataddharmatatsādhukāriṣu)

Description:

The affix 'ap' comes optionally after the verbs 'gad' (to speak), 'nad' (to sound), 'paṭh' (to read), 'svan' (to sound), when the upasarga 'ni' is in composition with them. Source: Aṣṭādhyāyī 2.0

[The kŕt 1.93 affix 1.1 aP 57 is optionally 62 introduced after 1.2 the verbal stems 1.91] gád- `speak' (I 53), nád- `resound' (I 551), páṭh- `recite, read' (I 91) and sván- `reverberate', co-occurring with the preverb ni-° [to form action nouns 18 denoting 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.

Source:Srisa Chandra Vasu's Aṣṭādhyāyī of Pāṇini

Anuvṛtti: 3.3.18, 3.3.19, 3.3.57, 3.3.62

Kāśikāvṛttī¹: apityeva. niśabde upapade gada nada paṭha svana ityetebhyaḥ dhatubhyaḥ vā ap pra   See More

Kāśikāvṛttī²: nau gadanadapaṭhasvanaḥ 3.3.64 apityeva. niśabde upapade gada nada paṭha svana    See More

Nyāsa²: nau gadanadapaṭhasvanaḥ. , 3.3.64

1.Source: Arsha Vidya Gurukulam
2.Source: Sanskrit Documents