06-26-2012, 12:00 AM
In some esoteric lineages, Nagarjuna was said to have met Vajrasattva in an iron tower in South India, and was taught tantra, thus transmitting the esoteric teachings to more historical figures.[2]
http://en.wikipedia.org/wiki/Vajrasattva
http://en.wikipedia.org/wiki/Vajrasattva

