A critical commentary by the Sikh stalwart of the twentieth century , Vir Singh presents his interpretation of the Sikh canon in the light of his mystical insight and life long study of the text. This exegesis follows 5 categories of elucidation. Etymology, Grammar, Syntax, Meaning and Insight. Biographical and Historical notes have been added where necessary, although this is an incomplete work published posthumously this work has shaped the flow of sikh studies and will be relevant for any student of Gurbani.