Patanjali Yoga Sutra — तदा सर्वावरणमलापेतस्य ज्ञानस्याऽनन्त्याज्ज्ञेयमल्पम् ॥4.31॥

tadā sarvāvaraṇamalāpetasya jñānasyānantyājjñeyamalpam॥

Having exterminated the heinous dirt, Dharmameghaḥ Samādhi brings infinite knowledge to the sādhaka and things to be known are just insignificant or virtually nil for such a yogi.

Everything appears mysterious for a common man; so long as his quests are dealt to be solved by his inadequate senses. Our senses can bring only limited knowledge of the material realm. But the enlightenment obtained from Dharmameghaḥ Samādhi is just unparallel, says patañjali. There is nothing left to be known. For a yogi, everything in the universe is made of the finest texture of ātman; ātman alone is all-pervading. When he has understood the ātman itself, what is left to be known? yājñavalkya says in bṛhadāraṇyaka upaniṣad: ‘With That shall you know all; with what shall you know That?’ Vedānta says, ‘ekena jñātena sarvaṁhi vijñātaṁ bhavati’ meaning: ‘By knowing That ONE, everything can be known’.

Bhagavān calls such sādhakas as jñānis.

उदाराः सर्व एवैते ज्ञानी त्वात्मैव मे मतम्।

आस्थितः स हि युक्तात्मा मामेवानुत्तमां गतिम्॥गीता ७.१८॥

udārāḥ sarva evaite jñānī tvātmaiva me matam.

āsthitaḥ sa hi yuktātmā māmevānuttamāṁ gatim ॥Gītā 7.18॥

I consider all of them as noble. But My view is that the jñāni — knower is My very Self and is superior to all. Because, always being one with Me, he has a strong belief that I am his ultimate destiny.

Where the body, owing to its limitations, cannot reach, mind can reach. Bhaktivedānta says devotee reaches Bhagavān in three stages:

a. Sālokyabhāva: Experiencing one’s presence in His loka (The realm of Paramātma). ‘Now, I am in the kingdom of Bhagavān.’

b. Sāmīpyabhāva: Experiencing the proximity to Him (Paramātma sānidhya and darśana). ‘Now I am very close to Him.’

c. Sāyujjyabhāva: Being absorbed in Him (Paramātmaikya), ‘I am one with Him.’

Sāyujjyabhāva as explained by Bhagavān Śrīkr̥ṣṇa is:

आब्रह्मभुवनाल्लोकाः पुनरावर्तिनोऽर्जुन।

मामुपेत्य तु कौन्तेय पुनर्जन्म नविद्यते।।गीता ८.१६।।

ābrahmabhuvanāllokāḥ punarāvartino’rjuna.

māmupetya tu kaunteya punarjanma navidyate ॥Gītā 8.16॥

Even if a sādhaka reaches any of the lokas (psychological realms) right from earth (Manuṣya loka) to Brahmaloka, he has to come back and is subject to births and deaths. But, owing to his divine sādhana, if is able to reach My loka and Me, he is said to have transcended the cycle of birth and death.