Shruti and Smriti
Shruti is considered to be solely of divine origin. It is preserved as a whole, instead of verse by verse. It includes the four Vedas (Rigveda, Yajurveda, Samaveda and Atharvaveda) the Brahmanas, the Aranyakas and the Upanishads with commentaries on them.
Smriti refers to all the knowledge derived and inculcated after Shruti had been received. Smriti is not 'divine' in origin, but was 'remembered' by later rishis (sages by insight, who were the scribes) by transcendental means and passed down though their followers. It includes the Bhagavata Purana and the Vishnu Purana which are Sattva Puranas. These both declare Vishnu as Para Brahman Supreme Lord who creates unlimited universes and enters each one of them as Lord of Universe.
Read more about this topic: Vishnu, Sacred Texts