AbstrAct The recent publication of theBka' gdams gsung 'bum collection is opening the way for new research in the field of Tibetan Buddhist epistemology by giving us access to some of the earliest indigenous compositions in the domain. This paper focuses on one of the two recovered epistemological works by the great scholar and translator Rngog Blo ldan shes rab (1059-1109): his concise guide to theNyāyabindu?īkā, a commentary composed by Dharmottara (8th c.) on Dharmakīrti's (7th c. or earlier)Nyāyabindu. The first part of my paper provides a general introduction to Rngog Blo ldan shes rab's concise guide, which I am in the process of editing and translating. The description of the manuscript and a detailed presentation of the contents of the text will be provided in the introduction to this forthcoming study. I concentrate here on its place within Rngog Blo ldan shes rab's contributions as a translator and exegete and in relation with the spread of Dharmakīrti's works in Tibet. I discuss in particular the circumstances of its composition, its intended function and potential impact. In the second part of the paper I show how such