Grammatical Sūtra: आतश्चोपसर्गे ātaścopasarge
Individual Word Components: ātaḥ ca upasarge
Sūtra with anuvṛtti words: ātaḥ ca upasarge 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), striyām (3.3.94), aṅ (3.3.104)
Type of Rule: vidhi
Preceding adhikāra rule:3.2.134 (1ā kveḥ tacchīlataddharmatatsādhukāriṣu)

Description:

The affix 'aṅ' comes after those verbs which end in long 'â' when an upasarga is in composition, and when the word to be formed is feminine. Source: Aṣṭādhyāyī 2.0

[The kŕt 1.93 affix 1.1 a 104] is also (ca) introduced [after 1.2 verbal stems 1 91 ending in 1.1.72] the phoneme [°-ā] co-occurring with preverbs (upa-sarg-é) [to form feminine 94 action nouns 18]. 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, 3.3.94, 3.3.104

Kāśikāvṛttī¹: ākārāntebhyaḥ upasarge upapade striyam aṅ pratyayo bhavati. ktino 'pavādaḥ. prad   See More

Kāśikāvṛttī²: ātaś ca upasarge 3.3.106 ākārāntebhyaḥ upasarge upapade striyam aṅ pratyayo bha   See More

Nyāsa²: ātaścopasarge. , 3.3.106 "śradantaroḥ"ityādi. upasarge ivopasargavat.    See More

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