the posture of the guru is a thing to be thought about always. That is the clarity

 :)The four sons, of brahmA, sanaka, sanandana, sanAtana, sanat kumAra did austere tapas and analysis, but they were unclear of the Supreme Truth. They finally decided to come to Lord Shiva to get the knowledge of the Truth. The Lord sat under the banyan tree, and the four sages also sat down around Him. Lord stayed in the yOga posture without saying a single word. The four sages got all their doubts cleared just by that posture. The form in which God appeared as a Supreme Guide is the form of wisdom dakshiNAmUrti.

This explains that the Truth cannot be explained in words and must be experienced. Including the great chinmudra posture, the posture of shrI dhakshiNA mUrti, who is the teacher of all the teachers, indicates a lot of information that needs days to explain. As thirumUlar says, the posture of the guru is a thing to be thought about always. That is the clarity