7-100 Muhammad ibn al-Hassan - may God be pleased with him - narrated that Ahmad ibn Idris quoted Muhammad ibn Ahmad, on the authority of Muhammad ibn Hisan, on the authority of Abi Muhammad al-Razi, on the authority of Al-Hussein ibn Yazid al-Nawfaly, on the authority of Al-Sakoony, on the authority of Ja’far ibn Muhammad (MGB), on the authority of his father (MGB) that God’s Prophet (MGB) said, “
Whoever cuts off his nails and shaves his moustache on Saturdays or Thursdays shall be immune from toothache and eye pains.”