Tobias Scheunchen (eds.), "Bāb al-Zāhir - باب الزاهر " in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/5208
  
    
      
        
          Bāb al-Zāhir
          باب الزاهر
          Bāb al-ʿUmra
          باب العمرة
          
          
          One of the entrances to the Great Mosque in Mecca.
          https://bqgazetteer.bethmardutho.org/place/5208
          http://syriaca.org/place/5208
          
            Riḥlat Ibn JubayrIbn JubayrM.J. de Goeje 
            80, 105, 110, 111