यस्मात्तैरुच्यते सद्भिरेवं वस्तुप्रवृत्तये ॥८॥
yasmāttairucyate sadbhirevaṃ vastupravṛttaye
— because it is thus declared by those worthy ones, (to account) for the operation of (real) things.
— because it is thus declared by those worthy ones, (to account) for the operation of (real) things.