اذا حلف فيك الرجل بت نعس و اذا حلف فيك النساء بت فيق If men swear to harm you, sleep through the night, but if women swear to harm you, stay awake

  This Moroccan proverb is from the Wit and Wisdom of Morocco by Edward Westermack:

اذا حلف فيك الرجل بت نعس و اذا حلف فيك النساء بت فيق
(ida halfu feek r-rajul bat na'as wa ida halfu feek an-nisa' bat fayeq)
Literal meaning: if men swear to harm you, sleep through the night, but if women swear to harm you, stay awake.
Meaning: women are more dangerous than men, as in the Kipling poem: "the female of the species is more deadly than the male"