مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ فَضَّالٍ عَنْ حَمَّادِ بْنِ عِيسَى عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ السِّوَاكُ يَذْهَبُ بِالدَّمْعَةِ وَ يَجْلُو الْبَصَرَ .
7. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Faddal from Hammad ibn ‘Isa who has said the following: “Abu ‘Abd Allah , has said, ‘Tooth brushing stops tears and sharpens eyesight.’” 