pārārthyaṃ cakṣurādīnāṃ yat punaḥ pratipādyate śayyāśanādivattena saṃghātatvena hetunā
The fact that the eyes and other [organs] exist for another's purpose is asserted [by the Sāṃkhya], using as reasoning their being composite entities, like beds, seats and such [things].