This document discusses various types of evidence in Islamic law including circumstantial evidence (al-qarinah). It defines circumstantial evidence as things that can be heard, seen, or touched, and which allow logical inferences to be made. It outlines five types of circumstantial evidence and discusses the authority for using expert evidence and documentary evidence. It also examines the application of circumstantial evidence in hudud (criminal) cases for offenses like theft, robbery, and zina (sexual relations outside of marriage), noting the conditions and views of different schools of Islamic law on when circumstantial evidence alone can prove guilt.