Grammatical Sūtra: मातृष्वसुश्च mātṛṣvasuśca
Individual Word Components: mātṛṣvasuḥ ca
Sūtra with anuvṛtti words: mātṛṣvasuḥ ca pratyayaḥ (3.1.1), paraḥ (3.1.2), ca (3.1.2), ādyudāttaḥ (3.1.3), ca (3.1.3), ṅyāpprātipadikāt (4.1.1), taddhitāḥ (4.1.76), samarthānām (4.1.82), prathamāt (4.1.82), vā (4.1.82), aṇ (4.1.83), strīpuṁsābhyām (4.1.87), nañsnañau (4.1.87), bhavanāt (4.1.87), tasya (4.1.92), chaṇ (4.1.132), ḍhaki (4.1.133), lopaḥ (4.1.133)
Type of Rule: vidhi
Preceding adhikāra rule:4.1.83 (1prāg dīvyato 'ṇ)

Description:

So also, after the word '((mātṛṣvasṛ))' the affix '((chaṇ))' is added, and the final is elided when '(( hak))' follows, in forming patronymics. Source: Aṣṭādhyāyī 2.0

[The taddhitá 76 affix 3.1.1 chaṆ 132 is introduced] also [after 3.1.2 the nominal stem 3.1.2] mātr̥-ṣvasŕ- `maternal aunt, mother's sister' [ending in 1.1.72 the sixth sUP triplet to denote a descendant 92, and before taddhitá 76 affix 3.1.1 ḍháK introduced after 3.1.2 it, lopa (0̸) replaces its stem-final phoneme 133]. 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: 4.1.92, 4.1.132, 4.1.133

Kāśikāvṛttī¹: pitṛṣvasuḥ ityetadapekṣate. pitṛṣvasur yaduktaṃ tan mātṛṣvasurapi bhavati, chanṇ   See More

Kāśikāvṛttī²: mātṛṣvasuś ca 4.1.134 pitṛṣvasuḥ ityetadapekṣate. pitṛṣvasur yaduktaṃ tan mātṛṣ   See More

Nyāsa²: mātṛṣvasuśca. , 4.1.134 "pitṛṣvasurityetadapekṣate"iti. ihāpi "an   See More

Bālamanoramā¹: mātṛṣvasuścā. cakārācchaṇ, ḍhaki lopaścānukṛṣyate. tadāha– pitṛṣvasuryaduktamit Sū #1124

Bālamanoramā²: mātṛṣvasuśca 1124, 4.1.134 mātṛṣvasuścā. cakārācchaṇ, ḍhaki lopaścānukṛṣyate. ta   See More

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