A speaker may later claim that waaw was intended circumstantially or that a phrase carried a special qualification. The speaker's claim of intent and the outward signification of the words are not identical matters.
Classical legal discussion can distinguish responsibility before God (diyanatan) from judgment on outwardly established proof (qada’an). A claimed intention cannot create an interpretation that the expression is incapable of bearing.
Therefore first determine the possible linguistic senses, then consider usage and relevant evidence. An unexpressed intention does not automatically rewrite the condition stated.