Zayd ibn Ali
The meaning of the term went through several changes over time. According to Zaydi sources, the term was used by Zayd ibn Ali against some Kufans was not because to their rejection of the Abu Bakr &amp; Umar, but because of for their rejection of Zayd ibn Ali's claim to Imamate because they considered Ja'far al-Sadiq to be the Imam instead.