sentences:  Its most important text is the "Yoga Vani".The siddhayoga guru prepares the kundalini shakti which automatically gets infused in the disciple at the muladhara chakra, awakening and raising spiritual energy up the Sushumna 
  Various ancient texts discuss this effect of nearness to the guru.The "Kularnava Tantra" has; ""An intelligent person should regard this teacher as their preceptor by whose contact inexpressible bliss is produced in the disciple.""