Among the works in Longchen Rabjam's famous collection, The Seven Treasuries, commonly known as the Chöying Dzöd concerns the spiritual approach known as trekcho (cutting through solidity), which brings spiritual practitioners of the highest acumen to freedom effortlessly. The Chöying Dzöd consists of two a set of source verses entitled The Precious Treasury of the Basic Space of Phenomena and Longchenpa's own commentary on those verses, A Treasure Trove of Scriptural Transmission. Each of these has been published separately. This book, A Treasure Trove of Scriptural Transmission, contains commentary with source verses interspersed.
This wonderful book, that I spent a year reading a page or two a day, is impossible to praise too much. And one chapter I read again immediately: it was so good and I needed to understand it more. I was glad to see in 'An Exhortation to Read the Seven Treasuries' (of which this is one), by Patrul Rinpoche and included at the end of the book, that "You don't need to scrutinize the meaning of the words with precision, as is the case with pedantic treatises that are difficult to understand. In the naturally settle state, mingle your mind with these texts and it will instantly become expansive and nakedly unobstructed."