Radha-Krsna Ganoddesa Dipika, Sri Rupa Goswamipad, verse 182:
upAsyo jagatAM cakSur
bhagavAn padma-bAndhavaH
japyaH svAbhISTa-saMsargI
kRSNa-nAma mahAmanuH
The Sun God, who is the eye of the world and the friend of the lotus, is the worshipable deity of Sri Radha. The holy name of Sri Krsna is Radha's favorite and worshipable mantra.
(Can any of our Sanskritists explain "saMsargI"? It is used in the sense of purification, unification...?)