Tohoros 1:5-6

Tohoros 1:5

Food that was rendered ritually unclean by a primary form of impurity and food that was rendered unclean by a derivative form of impurity combine to convey impurity in the less stringent degree of the two. For example, if a half-egg volume of food with first-degree impurity and a half-egg volume of food with second-degree impurity were mixed together, the resulting mixture has second-degree impurity. If a half-egg volume of food with second-degree impurity and a half-egg volume of food with third-degree impurity were mixed together, the resulting mixture has third-degree impurity. If an egg’s volume of food with first-degree impurity and an egg’s volume of food with second-degree impurity were mixed together, the resulting mixture has first-degree impurity (since they are full volumes, we follow the more stringent degree); if this mixture was then divided, each part has second-degree impurity. If each part fell separately onto a loaf of trumah, they render it unfit (i.e., third-degree impurity) but if they fell together, they give it second-degree impurity.

Tohoros 1:6

If an egg’s volume of food with second-degree impurity and an egg’s volume of food with third-degree impurity were mixed together, the resulting mixture has second-degree impurity. If this mixture was divided, each part has third-degree impurity. If each part fell separately onto a loaf of trumah, they don’t invalidate it; if they fell together, they give it third-degree impurity. If an egg’s volume of food with first-degree impurity and an egg’s volume of food with third-degree impurity were mixed together, the resulting mixture has first-degree impurity. If this mixture was divided, each part has second-degree impurity because even the third-degree impurity that touches first-degree impurity is rendered a second-degree impurity. If two eggs’ volume of food with first-degree impurity and two eggs’ volume of food with second-degree impurity were mixed together, the resulting mixture has first-degree impurity. If this mixture was divided in two, each half continues to have first-degree impurity; if it was divided into three or four parts, each has second-degree impurity. If two eggs’ volume of food with second-degree impurity and two eggs’ volume of food with third-degree impurity were mixed together, the resulting mixture has second-degree impurity. If this mixture was divided in two, each half continues to have second-degree impurity; if it was divided into three or four parts, each has third-degree impurity.