Complete jinās requires identity in the kinds of letters, their number, vocalization and arrangement. A broad similarity in sound or appearance is not enough when one of these dimensions differs; an appropriate form of incomplete jinās must then be considered.
DimensionTest
Kinds of lettersAre the letters themselves identical?
NumberIs the count identical?
VocalizationAre vowel patterns and sukun alike?
OrderIs the sequence identical?
Composite, differently vocalized, dot-based, near-articulation and reversed forms of jinās refine this scheme. If one required condition fails, “complete” must not be asserted without qualification.