Yoga Sutra 1.48 the knowledge is Truth-bearing
Sūtra I.48
In this, the knowledge is Truth-bearing
The knowledge which appears in that clearness of the mind in samādhi has the special name of Truth-bearing, in the literal sense that it brings truth alone, and there is no trace of erroneous knowledge in it. So it is said:
By scriptural authority, by inference, and by zest for meditation practice – In these three ways perfecting his knowledge, he attains the highest yoga.
In this in the light of knowledge, the inner clearness of the mind in samādhi, the knowledge which appears born of discrimination (viveka) has the special name of Truth-bearing, in the literal sense that it brings truth alone and there is no trace of erroneous knowledge in this, which is born of discrimination. For it appears in the one in whom all taint of error has been destroyed, and being born, it dispels the obscurities associated with the object of knowledge. So it is said:
By scriptural authority, by inference, and by zest for meditation practice – In these three ways perfecting his knowledge, he attains the highest yoga. Knowledge is a component part of yoga, and it has three degrees. The first is, to follow the instructions of the scriptures and the teachers; the second is mainly concerned with removing, by reason (yukti) and inference, objections to the authoritative teaching which is being studied, and so rightly establishing it; but the third is eagerness for constant practice of meditation on what has thus been established by the scriptures and by inferences from them. Perfecting his knowledge in these three ways, the yogin attains yoga.