Explanation

• The literal meaning of Zun-Noorain is Having two Lights
  
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• Zun-Noorain titles of Hazrat Usman, the third Rightly Guided Caliph,
• Who married two of Prophet Muhammad's daughters, viz. Hazrat Ruqaiyya and Hazrat Umm-e-Kulsoom
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• Zun-Noorain is the title of Usman (R.A).
• This title was given by Khadija (R.A).