كَالْيَدِ فِي الْقُدْرَةِ
As in using “hand” to signify power or capability.
The relation is not bodily resemblance. Effects of power are commonly manifested through hands: grasping, striking, cutting and taking. Thus “hand” can convey the underlying faculty or power.
Effects of power should not be confused with power itself. An act of taking is one manifestation; capability is the underlying capacity. In different contexts the same expression “hand” may designate benefaction or power. The specific intended sense must be inferred from the utterance, not from an unchanging substitution rule.