وَقد حكى بَعضهم أَن رجلا سُقِي الذراريح فَبَال قشوراً بيضًا كالفرقىء وَكَانَت إِذا حلت فِي المائية انْحَلَّت وصبغت صبغاً أَحْمَر فبرأ وعاش
Some say that cantharides causes white flakes to appear, which are like the membrane within eggs; these dissolve when the specimen is shaken and impart a reddish tint to the urine. This would be evidence of healing and recovery