Abd Allah ibn Saba
Jews view Saba negatively and historical Jewish sources regarded him as an apostate from Judaism. Sunni Muslims view Saba as a ghulat seeking to corrupt the message of Islam from by introducing proto-Shia beliefs. Since Saba used to hate Abu Bakr, Umar and Uthman, Sunni Muslims view him negatively and curse him. Sa'd ibn Abdullah al-Ash'ari al-Qummi reported in al-Maqaalaat wal-Firaq p. 20: