an account of the reasons, purpose, or history of a project, publication, or activity, similar to a preface
causation
(Buddhism) the principle of Dependent Origination (pratītyasamutpāda) or karmic causality
origin
the source, genesis, or starting point of an event or endeavor
avadana
a genre of Buddhist literature (Sanskrit: avadāna) consisting of stories about the past lives of figures to illustrate karmic causation; a style of Tang dynasty vernacular storytelling narrating such stories