He would be found in the Samaveda, signifying the harmony and melody hidden in the hymns. Indeed Lord Siva is very much the master of sounds and music as symbolized by the dhamru he carries. He who destroys or defeats doubt. Shankara is the dispeller of all doubts. By his dynamic response to our prayers, He destroys all our doubts, and stabilizes our faith in Him.
Faith is the absence of all forms of doubt.
Faith is a natural expression of the Sattvic nature in man. While the qualities of rajas and tamas are ego oriented and tend to strengthen the egoism in us, the quality of sattva inspires us to surrender to the divine and work for our salvation from the cycle of births and deaths. Selflessness, humility, purity of thought and devotion are its fundamental evolutes. Without these qualities, man cannot expect to progress much on the spiritual path. Shankara destroys the animal nature in man, which is represented by the tamasic and rajasic qualities.