Evidence (Skt. liṅga; Tib. རྟགས་; rtags) in pramana is defined as "something which enables us to know something else". For example, in the well-known logical argument, the presence of smoke rising over the mountain pass can be the evidence enabling us to know that there is fire behind the mountain.
Evidence is divided, first of all, into
- correct evidence (རྟགས་ཡང་དག་ rtags yang dag) in which the three modes are complete, and
- incorrect evidence (ལྟར་སྣང་, ltar snang)
- Logical reason (Tillemans)