In his spiritual teachings Yogananda advocated performance of Yoni Mudra, which he preferred to call Jyoti Mudra, by which a devotee could experience Jyoti and hear Omkar sound after continued and prolonged efforts. Considering the hurdles involved in performing different Kriyas properly this method was found by him to be more suitable. Moreover this was found to be in keeping with the precepts contained in the Sadhana Proceedure, chapter of the Holy Science of Swami Shri Yukteshvar. Yoganandaji revealed to some of his close associates like the author that it was through consistent and deep involvement in the manifestation of Pranava that he had attained success in his own spiritual illumination.
