السِّرْدَابِيَّةُ

A people of those who compose the extravagant zealots of the [sect called] رَافِضَة [q. v.], who expect El-Mahdee's coming forth from the سِرْدَاب that is in Rei, wherefore they bring a saddled and bridled horse every Friday, after the prayer [of the congregations at noon], saying, “ O Imám: in the name of God: ” three times. (TA.)