(11th/12th cent.). Hindu philosopher, theologian, and source of the school known as Vi i dvaita-ved nta . He was a rivai avite , who sought to give the devotional attitude implicit in that allegiance a more reflective and philosophical foundation. He accepted three means of knowledge: pratyk a (perception), anum na (inference), and abda or stra (verbal testimony). He accepted the basic texts of Vedanta philosophy (the Upani ads