yadā sūryādiśabdāś ca vivakṣāmātrabhāvinaḥ / dīpādau viniveśyante tajjñānair vyabhicāritā //
When words like "sūrya" etc., whose existence depends merely on [the speaker's] intention to express, are applied to a lamp etc., [then the reason is] contradicted by the cognitions of those [things].