The Blessed Lord said, “buddhya visuddhaya yukto
dhrtyatmanam niyamya ca
sabdadin visayams tyaktva
raga-dvesau vyudasya ca – Being endowed – yuktah with a pure – visuddhayā intellect – buddhyā, and controlling – niyamya oneself – ātmānam with fortitude – dhrtyā, rejecting – tyaktvā the objects – visayān – beginning from sound – sabdādin, and eliminating – vyudasya attachment and hatred – rāga-dvesau.
vairagyam samupasritah – One who resorts to solitude – vivikta-sevi, eats sparingly – laghu-āsi, has speech, body and mind under control – yata-vāk-kāya-mānasah, to whom meditation and concentration are ever the highest duty – dhyāna-yoga-parah nityam, and who is possessed – samupāsritāh of dispassion – vairāgyam.
ahankaram balam darpam
kamam krodham parigraham
vimucya nirmamah santo
brahma-bhuyaya kalpate – That person having discarded – vimucya egotism – ahankāram, force – balam, pride – darpam, desire – kāmam, anger – krodham and superfluous possessions – parigraham, free from the idea of possession – nirmamah, and serene – sāntah, is fit – kalpate for becoming Brahman – bhuyāya.
na socati na kanksati
samah sarvesu bhutesu
mad-bhaktim labhate param – One who has become Brahman – brahma-bhutah and has attained the blissful Self – prasanna-ātmā does not – na grieve – socati or desire – kānksati. Becoming the same – samah towards all beings – sarvesu bhutesu, he attains – labhate supreme – param devotion to Me – madbhaktim.
bhaktya mam abhijanati
yavan yas casmi tattvatah
tato mam tattvato jnatva
visate tad-anantaram – Through devotion – bhaktyā he knows – abhijānāti Me – mām in reality – tattvatah, as to what – yāvān and who I am – yah asmi. Then – tatah, having known – jnātvā Me – mām in truth – tattvatah, he enters – visate into Me immediately after that Knowledge.
[Chapter 18, Slokas 18.51 – 18.55]
Lord Krishna in the above verses explains the importance of engaging in rightful duties of yajnah-dāna-tapah and practising karma-phala-tyāgah while being steadfast on the Supreme Goal at all times through dhyāna-yoga that is considered to be the parah-nityam. This will help one to know purusah and prakrti along with its qualities and thereby know in entirety the creation, sustenance and annihilation of the Matrix of beings and thus, enter into the Supreme Being never to return after that Knowledge.