1 Peter 5
MISHNA I.: Cooked victuals may be put on a stove that was heated with straw or stubble. If the stove was heated with the pulp of poppy seed (i.e., poppy seed from which the oil was pressed out) or with wood, (cooked victuals) may not be put upon it, unless the (live) coals were taken out or covered with ashes. Beth Shamai says: (The latter instance) is permissible only in the case of victuals that are to be kept warm, but not of such as are improved by continued cooking. Beth Hillel says: Both alike are permitted. Beth Shamai says: (Victuals) may be taken off the stove, but not put back upon it; Beth Hillel permits it.
MISHNA: Following are the knots for the tying of which one becomes culpable. The knot of the camel-drivers (made on the guiding-ring) and the knot of the seamen (made on the bow of a ship); just as one becomes culpable for tying them, so also one becomes culpable for untying them. R. Meir said: “One does not become culpable for any knots that can be untied with one hand.”