Pranams With reference to the above topic and madhusudhana Saraswathi's commentary,I would like to know where in the Upanishads the relevance of Bhakthi is discussed? N.Srikanta. My question was where in the Upanishads considered as pinnacle of Vedas,is the relevance of Bhakthi as an aid to Jnana is discussed.?. N.Srikanta.