Grammatical Sūtra: द्व्यचश्छन्दसि dvyacaśchandasi 
Individual Word Components: dvyacaḥ chandasi
Sūtra with anuvṛtti words: dvyacaḥ chandasi 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 (4.3.134), vikāraḥ (4.3.134), avayave (4.3.135), mayaṭ (4.3.143)
Type of Rule: vidhi
Preceding adhikāra rule:4.2.92 (1śeṣe)
Description:
In the Chhandas, after a dissyllabic word, the affix ((mayaṭ)) comes in the sense of 'its product or part.' Source: Aṣṭādhyāyī 2.0
In the domain of Chándas [the taddhitá 1.76 affix 3.1.1 máyaṬ 143 is introduced after 3.1.2] a dissyllabic [nominal stem 1.1] (dvy-áC-as) [ending in 1.1.72 the sixth sUP triplet to denote its modification 134 or limb 135]. Source: From Aṣṭādhyāyī of Pāṇini In Roman Transliteration translated by Sumitra M. Katre, Copyright © 1987. Courtesy of the University of Texas Press.