Asana Pranayama Mudra Bandha by Satyananda Saraswati Nine faced Rudraksha Damru is a small hourglass

Damru is a small hourglass shaped drum

The 64 Yoginis are known to be capable to manifest in physical form to give dharshan even in this Kali Yuga

During the period of deluge (Pralaya) all the creations was destroyed and the creatures that had gone into Maharloka (the fourth of the upper worlds according to the Puranas)

Malachite absorbs this negativity and should be cleansed after each session

In the Hindu Mythology

Asana Pranayama Mudra Bandha by Satyananda Saraswati Nine faced Rudraksha Damru is a small hourglassAsana Prana Yama Mudra Bandha is recognized internationally as one of the most systematic yoga manuals today. Since it's first publication by the Bihar School of yoga in 1969 it has been reprinted seventeen times and translated into many languages. It is the main reference text used by Yoga teachers and students of Bihar Yoga Satyananda Yoga within the International Yoga Movement, and many other traditions as well. This comprehensive text provides