Mahabharata 5.45.16

5.45.16

yaḥ sahasraṃ sahasrāṇāṃ pakṣānsaṃtatya saṃpatet |
madhyame madhya āgacchedapi cetsyānmanojavaḥ |
yoginastaṃ prapaśyanti bhagavantaṃ sanātanam || 16 ||

O monarch, let not such words as 'I am thy servant' fall from their lips. The Supreme Soul hath another name, viz., Pure Knowledge. They only that have restrained their minds obtain Him. That Eternal One endued with Divinity is beheld by Yogins (by their mental eye). Even such is He. Illustrious and Full, all living creatures are merged into Him. He that knoweth that embodiment of Fullness attaineth to his object (emancipation) even here. That Eternal One endued with Divinity is beheld by Yogins (by their mental eye). That which flieth away stretching forth thousands of wings, yea, if endued with the speed of the mind, must yet come back to the Central Spirit within the living organism (in which the most distant things reside... That Eternal One endued with Divinity) is beheld by Yogins (by their mental eye). His form cannot be an object of sight. They only, that are of pure hearts, can behold him. When one seeketh the good of all, succeedeth in controlling his mind, and never suffereth his heart to be affected by grief, then he is said to have purified his heart. Those again that can abandon the world and all its cares, become immortal. (That Supreme Soul which is undying),--that Eternal One endued with Divinity--is beheld by Yogins (by their mental eye). Like serpents concealing themselves in holes, there are persons who following the dictates of their preceptors, or by their own conduct conceal their vices from scrutiny's gaze.