Bhashya
तदेते— एतस्मिन् उक्तेऽर्थे एते श्लोकाः मन्त्राः भव- न्ति ।स्वप्नेन स्वप्नभावेन, शारीरम् शरीरम्, अभिप्रहत्या निश्चेष्टमापाद्य असुप्तः स्वयम् अलुप्तदृगादिशक्तिस्वाभाव्यात्, सुप्रान् वासनाकारोद्भूतान् अन्तःकरणवृत्त्याश्रयान् बाह्या- ध्यात्मिकान् सर्वानैव भावान् स्वेन रूपेण प्रत्यस्तमितान्सुप्तान्, अभिचाकशीति अलुप्तया आत्मदृष्ट्या पश्यति अवभासयतीत्यर्थः ।शुक्रं शुद्धं ज्योतिष्मदिन्द्रियमात्रा- रूपम्, आदाय गृहीत्वा, पुनः कर्मणे जागरितस्थानम् ऐति आगच्छति, हिरण्मयः हिरण्मय इव चैतन्यज्योतिःस्वभावः, पुरुषः, एकहंसः एक एव हन्तीत्येकहंसः- एकः जाग्रत्स्व- प्नेहलोकपरलोकादीन् गच्छतीत्येकहंसः ॥
In plain words
'Then there are these' -- with reference to everything just said, these verses are mantras. 'By dream' simply means by the state of dreaming; 'the bodily frame' is just the body; 'having struck down' means having made it lie perfectly still; 'the unsleeping one' is the self itself, because his power to see never once switches off -- that is simply what he is. 'Looking upon the sleeping' means looking upon everything, inside and out, all of it nothing but impressions resting on a stirred mind, all of it set like the sun in its own form, gone dormant. 'He looks upon' means: by his own unfailing vision, he sees it all -- he lights it all up, in other words. The 'bright essence' is the pure, luminous residue of the senses, nothing more; 'having taken' just means having picked it up; 'again' he goes, in order to act, back to the waking world -- 'he goes' means 'he arrives.' 'The golden one' means one whose very nature is the light of consciousness, gold-like; then 'the person'; then 'the one swan' -- called that because, being one alone, he moves through everything, and because, being one, he travels to waking and dream, this world and the next, and every place besides.
Close to the Sanskrit
'tadete' — with reference to this matter just stated, these verses are mantras. 'By dream' means 'by the condition of dreaming'; 'the bodily [frame]' means 'the body'; 'having struck down' means having reduced it to motionlessness; 'the unsleeping one' means the self itself, because his nature — the power of unceasing vision and the like — never lapses; '[looking upon] the sleeping' means [looking upon] all things, external and internal, born as impressions resting on the modification of the inner organ, which have set, in their own form, like the sun; '[he] looks upon' means: by his unceasing vision as the self, he sees them, that is, he illumines them — that is the meaning. 'The bright [essence]' means the pure, luminous, mere essence of the senses in [that] form; 'having taken' means having seized; 'again' [he goes] for the sake of action to the waking state — 'he goes' means he arrives; 'the golden one' means one whose nature is the light of consciousness, as if golden; 'the person'; 'the one swan' — he is 'the one swan' because, being one, he alone goes everywhere; he is 'the one swan' also because, being one, he goes to waking, dream, this world, the other world, and so on.