But herein there is a point which may be the key of solving problems of this discussion, that is, equivocation does not refer to any sort of intention against appearance. Rather, equivocation appertains to the cases in which the speech is inherently ambiguous and can bear two meanings, but the mind attracts one of them in speech. For example, the phrase (اِنَّکُمْ لَسارِقُونَ), You are robbers which was told to Joseph brothers, its primary meaning is the same current robbery, but it can also refer to the previous robbery (robbing Joseph from his father), which is in contrary with its primary meaning.
Or when it is asked from someone, has that person presented this clothing to you? In reply as equivocation, he says: God may lengthen his life. The listener supposes that the speaker means yes, God may lengthen his life, while he may not have such purpose.