He instructed many scholars in different fields , including Abu Hanifah and Malik ibn Anas in fiqh , Wasil ibn Ata and Hisham ibn Hakam in Islamic theology , and Geber in science and alchemy .
Established the Ja'fari jurisprudence and developed the theology of Twelvers .
Twelvers instructed many scholars in different fields , including Abu Hanifah and Malik ibn Anas in fiqh , Wasil ibn Ata and Hisham ibn Hakam in Islamic theology , and Geber in science and alchemy .
Established the Ja'fari jurisprudence and developed the theology of Twelvers .