 Herodotus has documented that the Qedarites were called upon to assist Cambyses II of the Persian empire in his invasion of Egypt in 525 BCE . The Qedarites and Nabataens were known to enjoy close relations , even engaging as wartime allies against the Assyrians . It is possible that the Qedarites were eventually incorporated into the Nabataen state which emerged as the strongest Ishmaelite presence in northwestern Arabia c. the 2nd century CE . In The Cambridge Ancient History , some of the ( Arab ) Nabataens mentioned by Diodorus in his retelling of events that took place in 312 BCE are said to be Qedarites . 
 Herodotus <a href='been_done' title='1'><mark>has</mark></a> documented that the Qedarites <a href='uninflect' title='2'><mark>were</mark></a> called upon to assist Cambyses II of the Persian empire in his invasion of Egypt in 525 BCE . The Qedarites and Nabataens <a href='uninflect' title='3'><mark>were</mark></a> known to enjoy close relations , even engaging as wartime allies against the Assyrians . It is possible that the Qedarites <a href='uninflect' title='4'><mark>were</mark></a> eventually incorporated into the Nabataen state which emerged as the strongest Ishmaelite presence in northwestern Arabia c. the 2nd century CE . In The Cambridge Ancient History , some of the ( Arab ) Nabataens mentioned by Diodorus in his retelling of events <a href='null_relcl' title='5'><mark>that</mark></a>took place in 312 BCE are said to be Qedarites . 
Herodotus done documented dat the Qedarites was called upon to assist Cambyses II of the Persian empire in his invasion of Egypt in 525 BCE . da Qedarites and Nabataens was known to enjoy close relations , even engaging as wartime allies against the Assyrians . It is possible that tdaQedarites was eventually incorporated into the Nabataen state which emerged as thdatrongest Ishmaelite presence in northwestern Arabia c. the 2nd century CE . In Thedambridge Ancient History , sum of the ( Arab ) Nabataens mentioned by Diodorus in his retelling of events took place in 312 BCE are said to b Qedarites .