The final state of Yoga is Samadhi. Samadhi is the merging of the mind, body and soul into Oneness.
The Yoga Sūtras State, “When the object of meditation engulfs the meditator, appearing as the subject, self-awareness is lost. This is Samadhi (iii.3)” This state may be referred to as silence. The Bhagavad Gītā describes, “One who has resided in the Self (Atma), would be in the self, satisfied and contented, for him/her work does not exist (3.17)” In a material world, we are driven by our senses (indriyās), which is the act of our disposition (prakṛti) moving toward the soul (puruṣa). It is normal to think that you are the doer and that everything is done by your free will based on your reality.
Samadhi is not focused on a doer or free will. Instead it is focused on experience (bhāvana) without the experiencer (ahankāra). An artist consumed by the art, a musician consumed by the music, a politician consumed by the politics, a doctor consumed by the care, and a lawyer consumed by the practice of law may all be examples of Samadhi. By stepping out of the way, experience happens perfectly without the constraints of the mind (amanas). This is Liberation (Kaivalya)