رأيتُ أسداً يرمي
I saw a lion shooting arrows.
The reference to shooting arrows rules out the literal animal and points to a brave person. The source is a lion, the target a courageous human, and the shared quality bravery. As “asad” is a generic noun, the borrowed use is an original metaphor.
“Yarmī” functions as the clue, while courage is the resemblance. The feature justifying the transfer is not identical with the clue that prevents a literal reading.