We will gather the sinners on that blue day
-Quran 20:102
KhairAllah had camels of six hues in his herd, many Ahmar (Red), Ashqar (Rufous), and Asfar (Yellow), fewer Abyad (White) and Adbas (Bay), and even fewer Azraq (Blue), but these last went unridden, maybe because their color’s triliteral root, Z-R-Q, has the seconday meaning of Bird Shit, although Lane shows it as a corruption of the closely pronounced root Dh-R-Q, meaning Bird Shit more properly.