The World Federation One Stop Fiqh

Ruling 123

Whenever syrup, oil, or a similar thing is of a consistency such that when some quantity of it is removed, it does not leave an empty space [due to the space refilling], then even if one part of it becomes impure, the entire quantity becomes impure. However, if it is such that when a part of it is removed it leaves an empty space – even if afterwards it becomes filled – then only the part that the impurity touches is impure. Therefore, if [in the latter scenario] mouse droppings fall into it, only the part that the droppings touch is impure and the rest is pure.