Eating from any Clay is Unlawful Except the Clay of the Grave of Ĥusain عليه السلام, For Verily It Is the Cure

3. Abū ‘Abdillāh Muḥammad ibn Aḥmad ibn Ya’qūb narrated to me from ‘Ali ibn Ḥasan ibn ‘Ali ibn Faďďāl, from his father, from some of our companions, who said: Abū Ja’far (Imam Bāqir عليه السلام) or Abū ‘Abdillāh (Imam Sādiq عليه السلام) said: Verily Allāh, the Blessed and the Exalted, created Ādam from clay. Therefore, He forbade (eating) clay on the children of Ādam (mankind). I asked, “What about (eating some of) the clay of the grave of Ḥusain عليه السلام?” Imam عليه السلام replied, “It is unlawful for people to eat their own flesh but is it permissible for them to eat our flesh?!!! It is permissible to eat a very little amount from it, as much as a chick-pea.”