إن كثرت الوسائط بين اللازم والملزوم
When the links between the sign and the intended meaning are numerous, it is called talwīḥ.
The audience moves from a visible or conventional sign through intermediate circumstances before arriving at the intended attribute. Multiple links do not mean that the expression is unintelligible; they make the inferential route longer.
“Abundant ash,” “a timid watchdog,” and “a lean young camel” each require an account of intermediate circumstances before reaching the idea of generosity.