The word "Pancaratra" literally means "Five Nights". It is believed that Lord Vishnu taught 5 kinds of knowledge and worship to the Gods Ananta, Garuda, Visvakasena, Brahma and Rudra on 5 nights — hence the name.

Pancaratra literature is very vast. The total number of works-generally called samhita or tantra- exceeds 200, according to lists given in various works, though only a few have been printed. Quite a few are in the form of manuscripts preserved in oriental libraries. Many others are not available in any form though their names are mentioned in other works. The following is a brief descriptive list of the works presently available.

• Ahirbudhnya Samhita: This is a fairly voluminous work with 3880 verses in 60 chapters. The specialty of this work is that it deals with the four vyuhas, or emanations of the lord, descriptions of several mantras (sacred syllables) and yantras (magic diagrams) as also rituals for curing diseases.
• Aniruddha Samhita: Also called Aniruddhasamhita-mahopanisad, it has 34 chapters dealing entirely with descriptions of various rituals, methods of initiation, prayascittas, or expiations for sins, rules for making and installing the images of gods, and other similar topics.
• Hayasirsa Samhita: A fairly exhaustive work in 144 chapters and distributed among 4 kandas, or sections-‘Pratisthakanda’, ‘Sankarsanakanda’, ‘Lingakanda’ and ‘Saurakanda’- it deals primarily with rituals concerning the installation of images of various minor deities as also the methods of their preparation.
• Isvara Samhita: It is a work of 24 chapters of which 16 deal with ritualistic worship. Other subjects treated in this work are descriptions of images, methods of diksa, or spiritual initiation, practice of meditation, details regarding mantras, methods of self- control and the greatness of the Yadav Hill (now known as Melkote, a Vaisnava pilgrim centre on a hillock near Mysore, Karnataka).
• Jayakhya Samhita: This work is one of the cardinal texts of Pancaratra literature. It has 33 patalas, or chapters, and deals with the following topics: a detailed account of creation; yogabhyasa (practice of yoga) and mantropasana (spiritual practice through the repetition of mantras, or sacred formulas); various Vaisnava mantras; puja (ritualistic worship) and homa (fire ritual); diksa (initiation); temples and worship there; acaras (codes of conduct) for Vaisnavas; and prayascittas, or expiations of sins.
• Kasyapa Samhita: This is a comparatively small work in 12 chapters. It deals mainly with poisons and methods of remedy by suitable mantras, or incantations.
• Maha-sanatkumara Samhita: This is a voluminous work of 10,000 verses spread over 40 sections in 4 chapters. It deals entirely with rituals of worship.
• Padma Samhita: Dealing mainly with rituals and chanting of mantras, this work is in 31 chapters.
• Parama Samhita: A work in 31 chapters, it deals with the process of creation; rituals of initiation and worship; and yoga classified as jnana yoga and karma yoga. It declares that jnana yoga, which includes pranayama and samadhi, is superior to karma yoga, which seems to mean ritualistic worship of Visnu.
• Paramesvara Samhita: A short work of 15 chapters, it deals with meditation on mantras, sacrifices and methods of rituals as also prayascittas, or expiations.
• Parasara Samhita: A concise work in 8 chapters, it deals with the methods of japa, or the muttering of the name of God.
• Pauskara Samhita: Considered one of the earliest works of the Pancaratra system, this consists of 43 chapters. Apart from dealing with various kinds of image worship, it also contains certain philosophical views. It is interesting to note that some funeral sacrifices also find a place here.
• Sudarsana Samhita: A treatise comprising 41 chapters, it deals mainly with meditation on mantras expiations of sins.
• Vihagendra Samhita: It is in 24 chapters. Apart from meditation on mantras, it deals with sacrificial oblations. In the twelfth chapter, the topic of pranayama as a part of the process of worship is also described extensively.
• Vishnu Samhita: A work in 30 chapters, it also deals mainly with ritualistic worship Its philosophy is akin to that of Sankhya with some variations like the purusa (the individual soul) being all-pervading and his activating prakrti to evolve into world.
• Visnu-tattva Samhita: Comprising 39 chapters, it deals with image worship, ablutions and the wearing of Vaisnava marks, and some purificatory rites.

There are approximately 10 students in this Patasala.