أُهْبَةُ السِّيَاحَةِ ... رَنَّةُ النِّيَاحَةِ
The trappings of wandering ... and a voice of lament.
Al-siyāḥah / al-niyāḥah have corresponding endings but different meanings. This is sajʿ: rhyming cadence in prose.
The sound pattern also serves the scene: the first phrase describes what the man looks like, the second what he sounds like.