《魏书·列传·卷四十一》
养子随父从戮的，按律已经免其生子，所以也不得独加罪于养子。
养所以从戮者，缘其已免所生，故不得复甄于所养。
Those who follow their fathers to death as adopted sons shall be exempted from having children according to the law, so adopted sons shall not be punished alone.