Tobias Scheunchen (eds.), "al-Nahrayn - النهرين " in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/5084
  
    
      
        
          al-Nahrayn
          النهرين
          
          A place in which a certain al-Qarmaṭī resided.
          https://bqgazetteer.bethmardutho.org/place/5084
          http://syriaca.org/place/5084
          
            Kitāb al-Masālik wa al-mamālikAbū ʿUbayd al-Bakrī
            1372