Sutra 2.2.8

8. And even if it be admitted; on account of the absence of a purpose.

Even if it were admitted that the Pradhāna is established by Inference, the Sāṅkhya theory could not be accepted for the reason that the Pradhāna is without a purpose. For, according to the view expressed in the passage, 'In order that the soul may know the Pradhāna and become isolated' (Sāṅkhya Kā. I, 21), the purpose of the Pradhāna is fruition and final release on the part of the soul; but both these are impossible. For, as the soul consists of pure intelligence, is inactive, changeless, and spotless, and hence eternally emancipated, it is capable neither of fruition which consists in consciousness of Prakṛti, nor of Release which consists in separation from Prakṛti. If, on the other hand, it be held that the soul constituted as described is, owing to the mere nearness of Prakṛti, capable of fruition, i.e. of being conscious of pleasure and pain, which are special modifications of Prakṛti, it follows that, as Prakṛti is ever near, the soul will never accomplish emancipation.