Based on a number of Buddhist tantras as well as conventional Tibetan Buddhist sources, the tantras and also the Vajrayana was taught through the Buddha Shakyamuni, but only to some persons. There are several stories and versions of how the tantras were disseminated. You'll find by now several very influential https://israeldsfqc.therainblog.com/32121915/goldie-madan-is-world-famous-astrologer-secrets