यं यं लोकं मनसा संविभाति
विशुद्धसत्त्वः कामयते यांश्च कामान् ।
तं तं लोकं जयते तांश्च कामां-
स्तस्मादात्मज्ञं ह्यर्चयेत् भूतिकामः ॥ १०॥
॥ इति मुण्डकोपनिषदि तृतीयमुण्डके प्रथमः खण्डः ॥
yaṃ yaṃ lokaṃ manasā saṃvibhāti
viśuddhasattvaḥ kāmayate yāṃśca kāmān .
taṃ taṃ lokaṃ jayate tāṃśca kāmāṃ-
stasmādātmajñaṃ hyarcayet bhūtikāmaḥ .. 10..
.. iti muṇḍakopaniṣadi tṛtīyamuṇḍake prathamaḥ khaṇḍaḥ ..
Whatever world a man of pure understanding envisages in his mind and whatever desires he cherishes, that world he conquers and those desires he obtains, Therefore let everyone who wants prosperity worship the man who knows the Self.
Commentary:
When we apprehend this Self in direct experience, whatever we wish to have will be in our hand. Whatever world we want to reach will be reached by us instantaneously. It may be the highest heaven, and we shall be there instantly. Ancient rishis were of this power. Narada can traverse through all the worlds as we can move through all the countries in this world with a vehicle. They have the capacity to adjust their spiritual personality to the conditions, laws and regulations of the different worlds. When they descend into the gross world, they adjust their personality into the gross conditions necessary; when they go to the heavenly world, they make their whole personality subtle, and they can even reach Brahmaloka as well. Narada is the son of Brahma himself. He can go to Vaikuntha and accost Narayana. So is the case with the knower of Brahman: yam yaṁ lokam manasā saṁvibhāti.
Taṁ taṁ lokaṁ jāyate: All regions come under the control of this knower of Brahman. And all the visualisations through the mind as objects of desire also get fulfilled in an instant. There is no time process. The objects of desire do not come tomorrow, they come just now; and we do not reach a place after some time, but immediately. A spaceless movement and a timeless achievement of purpose follows from the realisation of the Atman, which is eternity and space-like identity.
Therefore, it is proper for all people to worship the knower of Brahman. Because of the power of that person, the glory and greatness of that person who has known the Self, his blessing is wonderful. His blessing itself is a great virtuous benefit that accrues to us, because even to come in contact with a great soul should be regarded as the result of some meritorious deeds of the past. We shall not come in contact with anything worthwhile if our karmas do not permit.
Thus, the verse says that whatever world we contemplate in our mind, that we shall reach immediately, and whatever we think in our mind, that also will be materialised at once because of the power of the knowledge of the Atman. Hence, the knower of the Atman should be worshipped by everybody who is intent on their own welfare.