١٠ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ فَضَّالٍ عَنِ ابْنِ بُكَيْرٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ غَسْلُ الرَّأْسِ بِالْخِطْمِيِّ فِي كُلِّ جُمُعَةٍ أَمَانٌ مِنَ الْبَرَصِ وَالْجُنُونِ. 
10. A number of our people have narrated from Ahmad ibn Muhammad from ibn Faddal from ibn Bukayr who has said the following: “Abu ‘Abd Allah , has said, ‘Washing one’s head with marshmallow every Friday is protection against leprosy and insanity.’” (The following chapters are best explained by fatwa.) 