 Recitation of mantras (Japa) is an integral part of Bhakti Yoga, and in this tradition of Hinduism, it is sometimes called "Japa Yoga".There are certain days on which ' were prohibited, these were called ', after which "" must be resumed on the following day ; therefore the day of resumption is also called .Svādhyāya is one of the three key elements in the practice of yoga as defined in the "Yoga Sutras of Patanjali", appearing in the opening verse of Book two on spiritual practice and elaborated upon in two other verses.