kasina meditation objects

         
        विञ्ञाण कसिण
       आकास कसिणconsciousness
      ओदात कसिणaperture 
     लोहित कसिणwhite  
    पीत कसिणred   
   नील कसिणyellow    
  वायो कसिणblue     
 तेजो कसिणair      
आपो कसिणfire       
पठवी कसिणwater        
earth         

References

Buddhist Councils 1-3. (~483BCE, ~383BCE, ~250BCE). Digha Nikāya; Mahā Satipatthāna Sutta (The Great Frames of Reference) (Trans. Thanissaro Bhikkhu). Buddhist Councils. DN:22. https://www.dhammatalks.org/suttas/DN/DN22.html

Buddhist Councils 1-3. (~483BCE, ~383BCE, ~250BCE). Majjhima Nikāya: Satipatthana Sutta (The Foundations of Mindfulness) (Trans. Nyanasatta Thera). Buddhist Councils. MN:10.

Buddhist Councils 1-3. (~483BCE, ~383BCE, ~250BCE). Majjhima Nikāya: Maha-hatthipadopama Sutta (The Great Elephant Footprint Simile) (Trans. Thanissaro Bhikkhu). Buddhist Councils. MN:28.

Buddhist Councils 1-3. (~483BCE, ~383BCE, ~250BCE). Majjhima Nikāya: Maha-Rahulovada Sutta (The Greater Exhortation to Rahula) (Trans. Thanissaro Bhikkhu). Buddhist Councils. MN:62.

Buddhist Councils 1-3. (~483BCE, ~383BCE, ~250BCE). Majjhima Nikāya: Dhātu-vibhanga Sutta (The Great Establishing of Mindfulness Discourse) (Thanissaro Bhikkhu). Buddhist Councils. MN:140. https://www.dhammatalks.org/suttas/MN/MN140.html