فَلْيَضْحَكُوا قَلِيلًا وَلْيَبْكُوا كَثِيرًا
So let them laugh little and weep much.
“Laugh” is opposed to “weep,” and “little” to “much.” Two coordinated pairs therefore create the more developed pattern of muqābalah (counterbalancing), while ṭibāq is fundamentally the meeting of two opposed meanings.
Identify the paired oppositions and their order; merely finding a negative particle and an affirmative form does not settle the rhetorical classification.