The Vadi is komal Re, while the Samvadi is shuddh Dha. Notice that these do not form a perfect interval. So V.N.Paṭvardhan Rāg Vijñān, Vol. II, p.1 says "It is customary to give Re and Dha as vādi and saṃvādi, but seen from the point of view of the śāstras (treatises) it is not possible for re and Dha to be saṃvādī (i.e. consonant) to each other. For this reason, in our opinion it is proper to accept Dha as vādī and Ga as saṃvādī" Jairazbhoy(1995) p. 44 On the other hand if Ga receives too much emphasis, it would create the impression of raga PuriyaBor p. 114
