Abu 'Abd Allah Muhammad ibn Karram al-Sijistani (Arabic: أبو عبد الله محمد بن كَرَّام السجستاني) was an ascetic, hellfire preacher, hadith narrator, and a literalist theologian who founded the Karramiyya sect. His views were considered heretical, schismatic, and abominable by the majority of Sunni scholars. He was accused of holding the doctrine of anthropomorphism, and that his chief theological doctrine was that God is a substance (jawhar) and that he had a body (jism); for which reason his followers were commonly called the "Mujassima" (corporealists) and "Mushabbiha" (anthropomorphists).