Yogi does not need mind or intelligence to develop knowledge.

Verse 4.31

तदा सर्वावरणमलापेतस्य ज्ञानस्यानन्त्यात् ज्ञेयमल्पम् ॥३१॥

tadā sarva-āvaraṇa-mala-apetasya jñānasya-ānantyāt-jñeyam-alpam ||31||

Then knowledge, bereft of covering and impurities, becoming infinite, the knowable becomes small.

The stream of virtue eradicates all the veils of impurities. The yogi is devoid of doubts, preconceptions and prejudices. The infinite light of the soul illumines him continuously, and his consciousness and the seer become one.

For him, knowledge gained through the organs of cognition and through consciousness are insignificant compared with the infinite wisdom emanating from the soul.

This sutra describes the characteristics of the yogi who is devoid of afflicting actions. His head becomes clear and his heart clean and pure as crystal. When the clouds disperse, the sky becomes clear. When the sun is bright, no other light is required. When the light of the soul blazes, the yogi does not need mind or intelligence to develop knowledge.

His knowledge springs eternally from the seed of all knowledge (atman) as jnana ganga (perennial river of wisdom) , and he perceives directly. He has reached the state of fulfilment.

PATANJALI YOGA SUTRAS