Grama (halacha)


A Grama in Halacha is something that was indirectly caused by something else but which outcome is not guaranteed.
A classic example given to this is of vases that are filled with water and put around a campfire in order to extinguish it. This is allowed because it is indirect and because the fire might not extinguish.

In civil law

There is a rule that Grama benizakin patur. If somebody caused financial harm to somebody else via an action that was not guaranteed to harm them, the person cannot be forced by a court to pay, although he might be morally obligated to.

On Shabbat

An action which indirectly causes a Shabbat violation due to grama has a lower level of prohibition than an action which violates Shabbat directly. In situations of great need, a grama violation can be permitted.
Based on this, a variety of electrical devices have been developed which violate Shabbat only through grama, and thus can be used in situations of great need, for example in health care or security.