Is the oath of allegiance (Ayman al-Bay'ah) legally binding?

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The issue of rendering a ruling on the oaths of allegiance is treated with caution, as noted by Abu Abdullah Ibn Battah who reported that Abu Al-Qasim Al-Kharaqi refrained from issuing any fatwa concerning them and observed that none of his sheikhs issued rulings on this oath. Al-Kharaqi stated that the oath is binding only if the swearer undertakes all stipulations contained within it, regardless of whether they knew the specifics or not. The oaths of allegiance were historically established by Al-Hajjaj during the pledge of allegiance or important matters of authority, replacing the earlier practice of physical handshaking during the time of the Messenger of Allah (peace be upon him) and the Rightly Guided Caliphs. These oaths historically involved binding the swearer by Allah, divorce (talaq), manumission (itiq), and the Sadaqa (charity) of wealth.