Hadith No: 4
Al-Sheikh al-Jawahiri - Jawahir al-Kalam
Volume: (36) - Page Number: (358/359)
[The text is lengthy, so only the relevant excerpt is provided here]
- ....
In any case, {nothing of it is permissible} referring to the clay, from the {soil of al-Husayn ((peace be upon him))}, and it is permissible to seek healing by using it
without disagreement, rather there is consensus, in both forms, upon it, and the texts regarding it are abundant or even mutawatir, some of which include other forms of emphasis. Indeed, {one should not exceed the amount of a small handful} without any disagreement I find on this, and it may well be possible to achieve consensus on it, limiting oneself to what is certain in opposing something known to be forbidden. The statement of al-Sadiq ((peace be upon him)) to Hasan al-Sudir is relevant here:
"Do not consume more than a small handful from it," for if one eats more than that, it is as if they have consumed our flesh and blood. And in the report from one of them ((peace be upon them)), it is mentioned that Allah, the Exalted, created Adam from clay and prohibited clay to his offspring. I said, "What do you say about the clay from the grave of al-Husayn ibn Ali ((peace be upon them))?" He said, "It is forbidden for people to eat their flesh, but {it is permissible for them to eat our flesh,
albeit in small amounts, like a handful."}