It is also said that the concept of kegare (dirtiness/impurity) was dominant at that time, and a koden of food was offered to the bereaved family so that the bereaved family, who conducted the funeral, could avoid contact with other people so as not to spread this kegare.
また、穢れの思想が強かった時代に葬儀に携わる故人の親族が人々と接触して穢れを広めないようにするために故人の家族と親族の食料を予め用意しておくという配慮があったとも言われている。