«وَزَانَهُ شَنَبٌ نَاهِيكَ مِنْ شَنَبٍ»
The teeth’s lovely freshness adorned it—what extraordinary charm!
In this classical context, shanab refers to desirable beauty of the teeth, often involving whiteness and freshness. Reading it as a modern word for “moustache” would misrepresent the image here.
Nāhīka min shanab is an emphatic expression of admiration for that quality.