Abu Bakr
Mishna or Masna or Al-Muthanna ibn Haritha or Haris Al-Shaybani Al-Bakri was the Himyarite Koraite Abu Bakr to whom Ali (Abu Turab) pledged allegiance after the death of Hanzala. His step-daughter Rayhana Bint Zayd of Koraiza managed to poison Hanzala having been a serving woman in his household. Having seen for himself the Ark of the Covenant in the possession of Heraclius, he established an alliance with the Jews of Edessa who had been unable to convince his predecessor Hanzala to assist their cause. He introduced the Himyarite concept of Muhammad to Tachkastan and called the remnant of the Himyarite Koraites under the Koraite Emir Khaled (Ambrus) to assist him in putting down rebellion among the Messianists. Through his daughter, Asma bint Abi Bakr, he became the grandfather of Abdallah ibn al-Zubayir the founder of the Zubayrid Koraites.
