«أُرِيدُ أَنْ أَتْبَعَكَ لِأُشَاهِدَ وَلَدَكَ الْعَجِيبَ وَأُنَافِقَهُ لِكَيْ يُجِيبَ»
I want to follow you, see your extraordinary son, and draw him into conversation so that he replies.
Al-Ḥārith had been impressed by the youth’s improvisation and ready wit. His purpose is now to meet the young man, not to collect more money. Li-ushāhida / likay yujība express purpose and intended result.
This innocent request triggers the disclosure. The narrator’s admiration for a talented youth becomes the very reason Abū Zayd can no longer keep the ruse intact.