Assertion: curse's effect | /r/HasProperty | blackness
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Source sentences:
text: Some medieval Muslim writers—including Muhammad ibn Jarir al-Tabari, Ibn Khaldun, and even the later Book of the Zanj—asserted the view that the effects of Noah's curse on Ham's descendants included blackness, slavery, and a requirement not to let the hair grow past the ears, despite the fact that this contradicted the teachings of the Islamic prophet Muhammad regarding skin color and racial equality, most notably in his last sermon.