إِذَا أُرِيدَ إِفَادَةُ السَّامِعِ حُكْمًا
When the speaker intends to convey a judgment to the listener.
An element essential for understanding the intended judgment normally needs expression. Where the remainder of the discourse sufficiently indicates an element, omission becomes the normal economy of speech. Neither maximum explicitness nor maximum brevity is universally eloquent.
A qarīnah is a verbal or situational cue guiding the hearer to what is omitted. An earlier noun is a verbal cue; a visible object, an immediately preceding question, or the surrounding situation may be a situational cue.