Ākāśagarbha Bodhisattva or Akasagarbha Bodhisattva is a bodhisattva who is associated with the great element (mahābhūta) of space (ākāśa). He is also sometimes called Gaganagañja, which means "sky-jewel."
The Buddhist Tantras are a varied group of Indian and Tibetan texts which outline unique views and practices of the Buddhist tantra religious systems.
Buddhist Tantric texts began appearing in the Gupta Empire period though there are texts with elements associated with Tantra that can be seen as early as the third century.
By the eighth century, Tantra was a dominant force in North India and the number of texts increased with numerous Tantric pandits writing .
A mantra is a sacred utterance, a numinous sound, a syllable, word or phonemes, or group of words in Sanskrit, Pali and other spiritual languages.
Some mantras have a syntactic structure and literal meaning, while others do not.
One of the most ancient Buddhist mantras is the Ye Dharma Hetu, also known as the dependent origination dhāraṇī.
This phrase is said to encapsulate the meaning of the Buddha's Dharma. It was a popular Buddhist mantra .
The subject depicted in this thangka is called Guruparampara, a “Line of Teachers.”
It depicts the family tree of Nyingma lineage, as it were, and its function is to indicate a line of descent.
The meaning of this presentation is to show a refuge for believers. It creates a kind of structure with a number of deities and teachers in whom devotees take refuge, because they will help believers in the course of their spiritual development.