Hadith 5499

Ibn `Umar said: I met him when his eye was inflamed and asked him when his eye had become infected with the trouble I noticed. On his replying that he did not know I said, "You do not know, and yet it is in your head?" He replied, "If God will He will create it when you are unaware." He then snorted as loudly as I have ever heard an ass snort. Muslim transmitted it.