Four essential characteristics of karma

Four essential characteristics of karma (Skt. catvāri karmasvabhāva Wyl. las kyi ngo bo bzhi) —

1. a karma is determined (Wyl. las nges pa)
2. a karma multiplies (Wyl. las 'phel che ba)
3. a karma that has not been accomplished [by oneself ] cannot be experienced (Wyl. las ma byas dang mi 'phrad pa)
4. a karma does not dissipate [by itself] (Wyl. las byas pa chud mi za ba)

Source

RigpaWiki:Four essential characteristics of karma