One of the early movements that was important to the development of Vaishnavism was the ancient Pancharatra movement, whose sacred texts or Agamas consisted of detailed procedures to worship the sage Narayana, an ancient incarnation of Vishnu. Since the Pancharatra Agamas originated from Narayana himself, they're followed by pretty much all mainstream Vaishnavas today.
The first time I came across the word 'Pancharatra' was in case of Narada Pancharatra.
Every subsequent time I came across this word I thought Pancharatra refers to Narada Pancharatra. Basically, I had this idea that there is one scripture; Narada Pancharatra just like any other scripture.
As I went through different questions on this site and this wiki page; I realised that Pancharatra is not a single scripture.
So the question is;
- What are the different Pancharatra texts (I read that there are around 200 of them); please mention the principal ones.
- What is the basis to classify a text as a Pancharatra text? Ex. Bhagavad-Geeta is classified as Pancharatra text. What could be the reason to refer Geeta as a Pancharatra text?