«ثُمَّ فَتَحَ كَرِيمَتَيْهِ»
Then he opened his two eyes.
The presumed blindness is now decisively challenged. Karīmatayhi is an elevated expression for his two eyes, emphasizing their preciousness. Once Abū Zayd opens them, al-Ḥārith must reconsider the dependence he had assumed while guiding the guest.