Grammatical Sūtra: स्वतवान् पायौ svatavān pāyau
Individual Word Components: svatavān (luptaṣaṣṭhyantanirdeśaḥ) pāyau
Sūtra with anuvṛtti words: svatavān (luptaṣaṣṭhyantanirdeśaḥ) pāyau padasya (8.1.16), pūrvatra (8.2.1), asiddham (8.2.1), saṁhitāyām (8.2.108), ru (8.3.1), anunāsikaḥ (8.3.2), pūrvasya (8.3.2), tu (8.3.2), vā (8.3.2), naḥ (8.3.7)
Type of Rule: vidhi
Preceding adhikāra rule:8.3.4 (1anunāsikāt paro 'nusvāraḥ)

Description:

The ((n)) of ((svatavān)) is changed to ((ru)) before ((pāyu))|| Source: Aṣṭādhyāyī 2.0

[The substitute phoneme rU replaces the final 1.1.52 phoneme n 7 of the nominal padá 1.16] svátavān [before 1.1.66] the expression pāy-ú- `protector' [in continuous utterance 2.108]. 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: 8.3.1, 8.3.7

Kāśikāvṛttī¹: svatavānityetasya nakārasya rurbhavati pāyuśabde parataḥ. svatavām\u0310ḥ pāyura

Kāśikāvṛttī²: svatavān pāyau 8.3.11 svatavānityetasya nakārasya rurbhavati pāyuśabde parataḥ.   See More

Nyāsa²: svatavānpāyau. , 8.3.11 svatavāniti pūrvavannirdeśau veditavyaḥ. tathā "kān   See More

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