Āgama (Hinduism) in the context of "Hindu texts"

In Hinduism, Yajna or Yagna (Sanskrit: यज्ञ, lit. 'act of devotion, worship, offering in fire', IAST: yajña) also known as Hawan, is a ritual done in front of a sacred fire, often with mantras. Yajna has been a Vedic tradition, described in a layer of Vedic literature called Brahmanas, as well as Yajurveda. The tradition has evolved from offering oblations and libations into sacred fire to symbolic offerings in the presence of sacred fire (Agni).

Yajna rituals-related texts have been called the Karma-kanda (ritual works) portion of the Vedic literature, in contrast to the Jnana-kanda (knowledge) portion found in the Vedic Upanishads. The proper completion of Yajna-like rituals was the focus of Mimansa school of Hindu philosophy. Yajna have continued to play a central role in a Hindu's rites of passage, such as weddings. Modern major Hindu temple ceremonies, Hindu community celebrations, or monastic initiations may also include Vedic Yajna rites, or alternatively be based on Agamic rituals.

Pancharatra (IAST: Pāñcarātra) was a religious movement in Hinduism that originated in late 3rd-century BCE around the ideas of Narayana and the various avatar and forms of Vishnu as their central deities. The movement later merged with the ancient Bhagavata tradition and contributed to the development of Vaishnavism. The Pancharatra movement created numerous literary treatises in Sanskrit called the Pancharatra Samhitas, and these have been influential Agamic texts within the theistic Vaishnava movements.

Literally meaning five nights (pañca: five, rātra: nights), the term Pancharatra has been variously interpreted. The term has been attributed to a sage Narayana who performed a sacrifice for five nights and became a transcendent being and one with all beings. The Pancharatra Agamas constitute some of the most important texts of many Vaishnava philosophies including the Madhva Sampradaya or Brahma Sampradaya of Madhvacharya and the Sri Vaishnava Sampradaya of Ramanuja. The Pancharatra Agamas are composed of more than 200 texts; likely composed between 600 CE to 850 CE.

Sadasiva (Sanskrit: सदाशिव, Sadāśiva), is the Supreme Being in the Shaiva Siddhanta tradition of Hinduism. Sadasiva is the omnipotent, subtle, luminous absolute, the highest manifestation of Shiva. Sadasiva is believed to bestow anugraha and vilaya, or grace and obscuration of pasha, which are the fourth and fifth of the Panchakritya, or the "five holy acts" of Shiva. Sadasiva is usually depicted having five faces and ten hands, and is considered one of the 25 forms of Shiva. Shiva Agamas conclude that the lingam, especially the mukhalingam, is another form of Sadasiva.