Shat.Upa 04.04

atraiṣa devaḥ svapne mahimānamanubhavati। yaddṛṣṭaṃ dṛṣṭamanupaśyati śrutaṃ śrutamevārthamanuśṛṇoti deśadigantare ca pratyanubhūtaṃ punaḥ punaḥ pratyanubhavati। dṛṣṭaṃ cādṛṣṭaṃ ca śrutaṃ cāśrutaṃ ca anubhūtaṃ cānubhūtaṃ ca saccāsacca sarvaṃ paśyati sarvaḥ paśyati। sa yadā tejasā'bhibhūto bhavatyatraiṣa devaḥ svapnān na paśyati। atha yadetasmn śarīre sukhaṃ bhavati ॥4॥

In this state, the divine-being experiences his own ego-ness in dreams. He perceives what is seen and heard and repeatedly experiences what has been encountered in various directions. He observes things, whether seen or unseen, heard or unheard, experienced or not, real or unreal. When overwhelmed by brilliance, the divine-being does not dream. Then, happiness is present in the body.

Bhāṣya 04.04

The non-material body of the being is similar to that of the Lord. Happiness arises in the being during dream-less deep sleep that is endowed with a resemblance to the body of the Lord.

bhagavataḥ śarīravatsādṛśyayukte jīve sukhaṃ bhavati।

Happiness arises in the being (during dream-less deep sleep) that is endowed with a resemblance to the body of the Lord.

kasyaitatsukhaṁ bhavatīti pṛṣṭatvāt। nahyacetanasyā śarīrasya sukhaṁ bhavati।

When asked, 'Whose happiness is this?' it is understood that the body, being unconscious, does not experience happiness. (In this context, the being is addressed as body:)

"yasyātmā śarīram"

"This being is the body."

iti ca śrutiḥ।

- stated thus in the Vedic scriptures.

sādṛśyāddehavajjīvo viṣṇostasya sukhaṃ bhavet। suptautasya sukhārthaṃ hi bhagavān suptimānayet॥

"The being resembling the body of the Lord Vishnu may experience happiness. Indeed, for the sake of His happiness in sleep, the Lord may bring sleep."

iti ca॥

- stated thus as well.