A parable of the garden which those guarding ( against evil ) are promised : Therein are rivers of water that does not alter , and rivers of milk the taste whereof does not change , and rivers of drink delicious to those who drink , and rivers of honey clarified and for them therein are all fruits and protection from their Lord . ( Are these ) like those who abide in the fire and who are made to drink boiling water so it rends their bowels asunder .