«وَيْلٌ لِكُلِّ هُمَزَةٍ لُمَزَةٍ»
Woe to every slanderer and faultfinder.
«هُمَزَة» and «لُمَزَة» share their length, structure and most of their letters, but have different initial consonants. The more distant articulation points provide a useful illustration of the principle behind lāḥiq jinās.
The two words also refer to related but distinguishable forms of disparagement. Rather than simple repetition, the near-sound pairing widens the force of the censure.