Having studied precedence and relatedness, the practical question is: what tells an interpreter to depart from the literal sense? The textbook names five kinds of indication.
«ما يترك به المعنى الحقيقي خمسة أنواع»
There are five types of indication that justify leaving a literal meaning.
1. Custom (‘urf): established communal usage.
2. The wording itself: what the full expression signals.
3. Context: the setting and flow of conversation.
4. The speaker’s situation or immediate intention: an indicator from the speaker.
5. The subject matter: a literal interpretation incompatible with the legal object being discussed.