full body cleansing mouth to rectum with salt water in hours of time - shankha prakshalana

 shankha prakshalana or laghu shankha prakshalana

this is  method of cleansing whole body with salt  water  involves drinking of 16 glases slat water step by step in rounds and perform few suggested yogas after drinking 2 glasses and use bathroom when feel urge.

https://www.easyayurveda.com/2018/01/16/laghu-shankha-prakshalana/