Grammatical Sūtra: अभिनिसः स्तनः शब्दसंज्ञायाम् abhinisaḥ stanaḥ śabdasaṃjñāyām
Individual Word Components: abhinisaḥ stanaḥ śabdasaṃjñāyām
Sūtra with anuvṛtti words: abhinisaḥ stanaḥ śabdasaṃjñāyām pūrvatra (8.2.1), asiddham (8.2.1), saṁhitāyām (8.2.108), apadāntasya (8.3.55), mūrdhanyaḥ (8.3.55), saḥ (8.3.56), iṇkoḥ (8.3.57), anyatarasyām (8.3.85)
Type of Rule: vidhi
Preceding adhikāra rule:8.3.64 (1sthādiṣv abhyāsena ca abhyāsasya)

Description:

The ((ṣ)) of ((stan)) is optionally changed to ((ṣ)) after the double preposition ((abhi)) ((nis)), when the word so formed is the name of a particular letter (i. e. visarga). Source: Aṣṭādhyāyī 2.0

[The substitute retroflex 55 sibilant ṣ 39 replaces non-padá-final 55 dental sibilant s 56 of the verbal stem] stán- `sound' (I 489) [co-occurring in composition 80 after 1.1.67 the preverb] abhi+nis [optionally 85 in continuous utterance 2.108] to denote a t.t. in grammar (śabda-samjñā-y-ām). 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: 8.3.55, 8.3.57, 8.3.85, 8.3.56

Kāśikāvṛttī¹: abhinisityetasmātuttarasya stanatisakārasya mūrdhanyādeśo bhavati anyatarasyāṃ ś   See More

Kāśikāvṛttī²: abhinisaḥ stanaḥ śabdasaṃjñāyām 8.3.86 abhinisityetasmātuttarasya stanatisakāra   See More

Nyāsa²: abhinisaḥ stanaḥ śabadasaṃjñāyām?. , 8.3.86 anādeśasakāratvādaprāpta eva ṣatve v   See More

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