The method of how the penalty was conducted is described in "Go Taiheiki" that the genital parts (penis or scrotum) of a man were removed, while the vagina was stitched up in case of applying this penalty against female criminals.
その方法は、「後太平記」に、男はヘノコを裂き（陰茎や陰嚢を切取る）、女は膣口を縫い潰して塞ぐと記録されている。