The Buddha, the Bhagavan Shakyamuni, arose in the form of Guhyasamaja, the king of all tantras to tame those who possess the attachment of the three poisons of the afflictions, the glorious Guhyasamāja root Tantra and so forth were taught. The many śrāvakas in the retinue practised and attained accomplishment and the vidyādharas also had various ways of commenting on the meaning of the tantras and the presentation of the maṇḍalas. In Tibet, the tradition of the nineteen-deity Mañjuvajra founded by the master Buddhajñānapāda and the tradition of the thirty-two-deity Akṣobhyavajra transmitted from Ārya Nāgārjuna, known as the Ārya tradition are renowned. Although the latter is also divided into two traditions, Marpa’s and Gö Lotsāwa’s, the glorious Guhyasamāja has the four yogas of the generation stage and the five stages of the completion stage. In particular, the ultimate oral instruction is to achieve the clear light of emptiness and the rainbow body. Therefore, up to the present day there are and are still beings who ridicule the number of vidyādharas who have attained the supreme siddhi by practising this. The merit and benefits of merely drawing images of Gusamsamāja and so forth and proclaiming the sound of the dhāraṇī mantra are superior to other ways of accumulating merits. It is the root of all the maṇḍalas, the main pillar of all the tantras, the essence of all the esoteric instructions, and the source of all the deities. It is incomparable to any other deity. It contains all the secret points of all the tantras without exception. If one practices it thoroughly, one will easily complete the two accumulations and realise the state of the four unsurpassed bodies. There are immeasurable temporary and ultimate blessings and benefits. There are many texts by Indian and Tibetan masters on the generation and completion stages and the sādhanas of glorious Guhyasamāja.