«فَمَا لَبِثَ أَنْ رَجَعَ مُتَدَهْدِهًا وَتَقَهْقَرَ مُقَهْقِهًا»
He soon returned, swaying with mirth and stepping backward in peals of laughter.
Mutadahdihan / muqahqihan enact both motion and noise. Repeated sounds help the prose mimic the agent’s uncontrollable laughter.
The judge asks «مَهِيمَ يَا أَبَا مَرْيَمَ؟»—what has happened, Abū Maryam? A serious inquiry becomes a comic scene.