Dakshinamurty is a form of Lord Shiva as a teacher. Bhagavata Purana mentions Lord Dakshinamurty being worshipped by Kubera and some Rakshasas. He was having a conversation with Narada about eternal brahman while others just listened. His left foot was placed on his right thigh and his left hand was on his left knee. He also wore a Rudraksha beads around his right wrist.
‘“After seeing this, not very far away, they saw a banyan tree. It was one hundred yojanas in height. Its branches extended for seventy-five yojanas. The shade always extended in every direction. Therefore, there was no heat and there were no nests. This was a tree where people engaged in great yoga, the refuge of those who sought emancipation. The gods saw Shiva, who had abandoned his rage, seated there, like Death. Tranquil in his form, he was tended to by serene and great Siddhas, Sanandana and the others. He was being worshipped by his friend, the master of the guhyakas and the rakshasas. The lord of intelligence and knowledge was immersed in the path of yoga. Because of his affection and desire to ensure the welfare of the worlds, the friend of the universe was practising it. His signs were those desired by ascetics—ashes, a staff, matted hair and deer hide. The complexion of his body was like that of an evening cloud. The crescent moon dazzled on his forehead. He was seated on a mat of darbha grass and was speaking to Narada, who had asked, about the eternal brahman, while other virtuous ones listened. The left one of his lotus feet was placed on his right thigh and his left hand was on his left knee. A garland of rudraksha beads was around his right wrist and he was seated in tarka mudra.
Source: Bhagavata Purana translated by Bibek Debroy Chapter 4(6)
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