Verse 4.16
न चैकचित्ततन्त्रं चेद्वस्तु तदप्रमाणकं तदा किं स्यात् ॥१६॥
na ca-eka-citta-tantraṃ cet-vastu tat-apramāṇakaṃ tadā kiṃ syãt ||16||
Things are known or unknown to the mind, being de-pendent on the colouring which they give to the mind.
The essence of an object is not dependent upon one's mind.
If the mind does not recognize the object, it means that mind or consciousness does not see, or that the seer is not stimulated by, the object.
But this does not mean that the object does not exist.
As prakrui is as real and eternal as purusha, so are object and subject. Due to unripe intelligence and differences in the development of consciousness, each individual perceives objects according to his own intellectual 'wavelength', though their essence does not change.
When a yogi reaches perfection in his sadhana, intelligence and consciousness touch the supreme knowledge: he becomes a fulfilled yogi, and remains merely an uninvolved witness of objects.
Man is a trinity of body, mind and soul. I have already shown that according to Indian philosophy, mind is treated as the eleventh sense. The five organs of action, five senses of perception and the mind are considered to be the eleven senses. Body, senses, mind, intelligence and self are interdependent: they are part of the cosmic consciousness (mahat) , and susceptible to mutation and change, unlike the soul, which is changeless.
The mind ignites stimuli in the senses of perception, or vice versa, and the organs of action participate so that the mind can experience objects. These experiences are imprinted according to the development of the mind, and in turn create
impressions on the consciousness.
If an object does not stimulate the mind, it remains unperceived by the mind or the mind fails to grasp it. When the mind is freed from the play of
the gunas, it sees objects in their true reality, and remains free from impressions.
Its contact with perceived objects is severed. Then mind and soul become one, and are one with the essence of all objects.
PATANJALI YOGA SUTRAS