yadyapi śabdānāṃ nānārthapratipādanasāmarthyamasti, natvarthānāṃ sarvārthakriyākāritvaṃ, pratiniyatatvāt kāryakāraṇabhāvasya /
Even though words have the capacity to express multiple meanings, the objects [denoted by them] do not have the capacity to perform all actions, because the relation between cause and effect is fixed.