Al-Kāfi - Volume 6 > Eating Clay
Hadith #3

عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ ابْنِ مَحْبُوبٍ عَنْ إِبْرَاهِيمَ بْنِ مِهْزَمٍ عَنْ طَلْحَةَ بْنِ زَيْدٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) إِنَّ عَلِيّاً ( عليه السلام ) قَالَ مَنِ انْهَمَكَ فِي أَكْلِ الطِّينِ فَقَدْ شَرِكَ فِي دَمِ نَفْسِهِ .

3. A number of our people have narrated from Sahl ibn Ziyad ibn Mahbub from Ibrahim ibn Mehzam from Talhah ibn Zayd who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, has said that ’Amir al-Mu’minin has said, ‘One who continues eating clay has a share in his own murder.’”