I heard from Abu Reza bin Abdislam an-Nishapuri, who was speaking in the year 510, at Nishapur, in the Grand Mosque: “We were headed to Timghaj, and the caravan was about a thousand camels long. One day, when we were stopped at a hot spring, we saw a woman standing at the top of a gravel heap, naked as to her head and naked as to her body, and rather well-formed, with a stature like cedar and a face like the moon and long, straight hair. She was looking right at us. Whatever we said to her, she gave no answer, but when we approached her she cried out and fled at a run, so fast that no horse could be faster. Our guides were Turks, and they said: ‘this person is a monster, which they call a nesnas.'” But let it be known that this is the noblest of animals, because of the three things that were mentioned before (namely, its upright stature, the width of its fingernails, and the hair on its head).
[regarding the second of these criteria, compare Diogenes Laertius’ story about Diogenes, Socrates, and the definition of man. One day, Diogenes of Sinope overheard a lecture in which Socrates claimed that man was a bipedal animal, without feathers. The next day, Diogenes showed up in Socrates’ classroom holding a plucked chicken. “Ecce Homo,” he said, but Socrates was quick on his feet and just added a third criterion to the previous day’s definition: man was a bipedal animal, without feathers, having broad fingernails (onukhoi, cognate with Nezami’s nakhen).]