مُبَيِّضٌ
1.
A man wearing white clothing. (TA.)
2.
Hence, المُبَيِّضَةُ
A sect of [the class called] the
ثَنَوِيَّة, (S, K,) the companions of المُقَنَّع; (S;) so called because they made their clothes white, in contradistinction to the
مُسَوِّدَة, the partisans of the dynasty of the 'Abbásees; (S, K, *) for the distinction of these was black: they dwelt in Kasr 'Omeyr. (TA.) [See also الحَرُورِيَّةُ.]