Sit on Padmasana or Siddhasana or Sukhasana. Close the ears with the thumb. This is Shanmukhi Mudra or Vaishnavi Mudra. Now hear the music of Anahata sounds. You will have wonderful concentration. Abandon all worldly thoughts. Subdue your passion. Become indifferent to all sensual objects. Practise Yama (self-restraint), or Sadachara (right conduct); concentrate on the sound which annihilates the mind.
By Swami Sivananda, from the Book Amrita Gita. Swami Sivananda lived from 1887-1963. He was one of the great Yoga Masters of the 20th Century who made Yoga available to a great public. Copyright of the texts of Swami Sivananda The Divine Life Society Rishikesh