In a standard Sanskrit dictionary, the word sampradaya is defined as “genuine instruction that has been received through guru-parampara or disciplic succession” (guru parampara gatu sad upadesasya).
The prefix sam indicates connection, while the stem is a cognate of pradhana, “source”. In the fourth chapter of Bhagavad-gita, Lord Krishna declares Himself to be the original source of the transcendental science of bhakti-yoga, and He confirms that one is connected to this knowledge only through guru-parampara.
Apasampradaya means “outside of the sampradaya”. About the apasampradayas Lord Caitanya said, visva andhakara koribe: “In My name they will make the whole world dark.”
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