Grammatical Sūtra: विभाषर्जोश्छन्दसि vibhāṣarjośchandasi
Individual Word Components: vibhāṣā ṛjoḥ chandasi
Sūtra with anuvṛtti words: vibhāṣā ṛjoḥ chandasi aṅgasya (6.4.1), asiddhavat (6.4.22), bhasya (6.4.129), iṣṭhemeyassu (6.4.154), raḥ (6.4.161), ṛtaḥ (6.4.161)
Type of Rule: vidhi
Preceding adhikāra rule:6.4.129 (1bhasya)

Description:

Before the affixes ((iṣṭha)), ((iman)) and ((īyas)), the ((ṛ)) of ((ṛju)) may optionally be changed to ((ra)) in the Chhandas. Source: Aṣṭādhyāyī 2.0

In the domain of Chándas [the substitute element ra 161] optionally (vibhāṣā) replaces [the short vowel r̥T 161 of the BHA stem 129] r̥jú- `straight, upright' [before 1.1.66 the affixes 3.1.1 iṣṭhaN, imáni̱C and īyasUN 154]. 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: 6.4.22, 6.4.129, 6.4.154, 6.4.161

Kāśikāvṛttī¹: ṛju ityetasya ṛtaḥ sthāne vibhāṣā repha ādeśo bhavati iṣṭhemeyassu parataḥ chand   See More

Kāśikāvṛttī²: vibhāṣā rjoś chandasi 6.4.162 ṛju ityetasya ṛtaḥ sthāne vibhāṣā repha ādeśo bha   See More

Nyāsa²: vibhāṣarjośchandasi. , 6.4.162

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