 his saying and this nerve in the states of hearing is like the crystalline in the states of sight. this is based on their saying that the occurrence of the ghosts of visible things is on the surface of the crystalline and we have refuted this.
قوله وهذه العصبة في أحوال السمع كالجليدية في أحوال الإبصار هذا بناء على قولهم إن وقوع أشباح المرئيات هو على سطح الجليدية ونحن قد أبطلناه.