Explanation:

 Suddhadvaita philosophical system was founded by Vallabhacharya. Shuddadvaita (Sanskrit: suddhadvaita "pure non-dualism") is the "purely non-dual" philosophy propounded by Vallabhacharya (1479-1531 CE), the founding philosopher and guru of the Vallabha sampradaya ("tradition of Vallabh") or Pustimarg ("The path of grace"), a Hindu Vaishnava tradition focused on the worship of Krishna. Vallabhacharya's pure form (nondualist) philosophy is different from Advaita. The Shrinathji temple at Nathdwara, and compositions of eight poets (a??achap), including Surdas, are central to the worship by the followers of the sect.