linear algebra - Given any two $n times n$ matrices $A$ and $B$ can we always find $c neq 0$ and $Y neq 0$ such that $AY = cBY$ is true?

Given any two $n \times n$ matrices $A$ and $B$ can we always find a scalar $c \neq 0$ and $n \times 1$ vector $Y \neq 0$ such that $AY = cBY$ is true ?