An objection follows: if every meaning has some necessary concomitant, how can complete signification exist without implication? The commentary restricts the relevant relation to an evident concomitant: in the narrower sense, grasping the subject leads to the concomitant; in the broader sense, grasping both terms yields certain awareness of the necessary connection.
Summary: Identify the sign and signified. Determine whether the sign is verbal or nonverbal, whether its connection is conventional, natural, or rational, and—if verbal and conventional—whether it signifies the whole meaning, a part, or an external necessary concomitant.
Practice: “Human” → rational animal is muṭābaqah; → animality is taḍammun; → necessary capacity for knowledge exemplifies iltizām. The next section turns to simple and compound expressions.