[4] The text dedicates most of its verses to the lifestyle of the renouncer, and its broad theme centers around renunciation or spiritual enlightenment.

[6][7] It describes renunciation as a stage of life where a man lives like a monk yogi, sleeps on sand and near temples, remain calm and kind no matter what others do to him, while pondering on Vedanta and meditating on Brahman through Om.

[4] The text dedicates most of its verses to the lifestyle of the renouncer, and its broad theme centers around renunciation or spiritual enlightenment.

[5] The text is notable for implying an ancient cultural tradition, that a man should go visit sacred places in his retirement, and take his wife with him.

[6] After the travels, he should proceed to renunciation where he lives like a monk yogi, sleeps on sand and near temples, remain calm and kind no matter what others do to him while pondering on Vedanta and meditating on Brahman through Om.

[25] This ex-student, states the text, then marries a woman of equal birth, he deposits the fire, performs a Brahma-sacrifice for a day and night.

Both Deussen and Olivelle consider this verse as obscure insertion and possibly corrupted, because neither does it fit with style nor does it follow the Sandhi rules of Sanskrit.

[6][30] On the day of initiation, states Kundika Upanishad, after he renounces the fire, he should silently recite the thirty four verses of Atharvaveda section 11.8.

[33][34] The third chapter of Upanishad describes the belongings of the renouncer, as follows:[35] A pot, a drinking cup, a sling, a tripod, a pair of shoes, a patched garment against the cold, a loincloth, a water strainer, a bathing cloth, and an outer garment: an ascetic should avoid anything else other than these.

[37][35] There is, states Deussen, likely corruption of the text with "tripod walking stick" wording requirements because it does not follow the precise meter the rest of the poetic verse does and it is not consistent across manuscript editions.

[38] The Kundika Upanishad asserts in chapter 4, that the Yoga (union) of knowledge occurs in mind, in the mind is perceived space, from space comes wind, from wind comes light, from the light rain the waters, from waters originated the earth, from earth came plants and food, from food is created semen, and from semen originates man.

[39] The one who studies, meditates and understands the origins and causes, realizes the Brahman, that which is ageless, immortal, imperishable, indestructible constant.

[8][45] This poem has been influential, fragments of it are referenced and appear in Advaita Vedanta texts such as in verses 495–529 of Vivekachudamani attributed to Adi Shankara.

[45][46] The renouncer has realized that his inner state is an ocean of total bliss, but one punctuated by waves that rise and fall because of winds of Maya (changing reality, illusion).

[48] The verses in this extra chapter ask this person, if he resolves to renounce, to first declare his intention to renounce to his friends and family,[note 3] offer oblations to his ancestors, libation on the morning after new moon, then recite hymns from the Vedas, such as verses from section 4.1.1 of Atharvaveda:[50] Rising victorious above heaven and earth, all yonder worlds; may Brahman, creator of all, kindly grant everyone prosperity.

In the east at first Brahman was born; Vena revealed him from the radiant summit; Disclosed his forms, the deepest, the most exalted, womb of the existent and the non-existent.