'bhagavata-sandarbha'-nama kaila grantha-sara
bhagavata-siddhantera tahan paiye para
bhagavata-sandarbha—the Bhagavata-sandarbha, which is also known as Sat-sandarbha; nama—named; kaila—made; grantha-sara—the essence of all scriptures; bhagavata-siddhantera—of conclusive information about the Supreme Personality of Godhead and His service; tahan—there; paiye—we get; para—the limit.
In particular, Srila Jiva Gosvami compiled the book named Bhagavata-sandarbha, or Sat-sandarbha, which is the essence of all scriptures. From this book one can obtain a conclusive understanding of devotional service and the Supreme Personality of Godhead.
Link to this page: https://prabhupadabooks.com/cc/antya/4/229