سَائِلُ اللَّئِيمِ يَرْجِعُ وَدَمْعُهُ سَائِلٌ
The petitioner returns from the miser with tears flowing.
The first sāʾil denotes a petitioner and the second something flowing. Their identical form and divergent senses supply the wordplay; the returning petitioner’s tears also create an image of humiliation and deprivation. Replacing one word can keep the basic meaning while removing the paronomasia.
A full criticism names the verbal figure and separately explains the emotional effect of the scene. Establishing one device need not entail denying every other valid aspect of the passage.