Bhashya
स्वात्मव्यापारसंप्रदानं करोति अनेन प्रकारेण पिता, तेन संप्रत्तिसंज्ञकमिदं कर्म ।तत् कस्मिन्काले कर्तव्यमित्याह —स पिता यदा यस्मिन्काले प्रैष्यन् मरिष्यन् मरिष्यामी-त्यरिष्टादिदर्शनेन मन्यते, अथ तदा पुत्रमाहूयाह— त्वं ॰ ब्रह्म त्वं यज्ञस्त्वं लोक इति ।स एवमुक्तः पुत्रः प्रत्याह ; स तु पूर्वमेवानुशिष्टो जानाति मयैतत्कर्त-व्यमिति ; तेनाह— अहं ब्रह्म अहं यज्ञः अहं लोक इति एतद्वाक्यद्वयम् ।एतस्यार्थस्तिरोहित इति मन्वाना श्रुतिर्व्या-ख्यानाय प्रवर्तते— यद्वै किंच यत्किंच अवशिष्टम् अनू-क्तम् अधीतमनधीतं च, तस्य सर्वस्यैव ब्रह्मेत्येतस्मिन्पदे एक-ता एकत्वम् ; योऽध्ययनव्यापारो मम कर्तव्य आसीदेता-वन्तं कालं वेदविषयः, सः इत ऊर्ध्वं त्वं ब्रह्म त्वत्कर्तृको-ऽस्त्वित्यर्थः ।तथा ये वै के च यज्ञा अनुष्ठेयाः सन्तो मया अनुष्ठिताश्चाननुष्ठिताश्च, तेषां सर्वेषां यज्ञ इत्येतस्मि-न्पदे एकता एकत्वम् ; मत्कर्तृका यज्ञा य आसन्, ते इत ऊर्ध्वं त्वं यज्ञः त्वत्कर्तृका भवन्त्वित्यर्थः ।ये वै के च लोका मया जेतव्याः सन्तो जिता अजिताश्च, तेषां सर्वेषां लोक इत्येतस्मिन्पदे एकता ; इत ऊर्ध्वं त्वं लोकः त्वया जेतव्यास्ते ।इत ऊर्ध्वं मया अध्ययनयज्ञलोकजयकर्तव्यक-
In plain words
In this manner the father transfers his own activities to the son, which is why this rite is called sampratti. When should this be performed? The text explains: when the father, observing signs of his approaching death, thinks 'I am going to die,' he summons his son and tells him, 'You are Brahman, you are sacrifice, you are the world.' The son, having already been instructed, knows that this is his duty and replies, 'I am Brahman, I am sacrifice, I am the world.' Since the deeper meaning of these two statements is somewhat hidden, the scripture sets out to explain them. Whatever study of the Veda—whether recited, learned, or unlearned—was incumbent upon the father for all this time, finds its complete unity in the single word 'Brahman'; the intention is: 'The Vedic study that was mine until now shall henceforth be yours, and carried out by you.' Likewise, all sacrifices—whether already performed by the father or left undone—find their unity in the single word 'sacrifice'; the meaning is: 'The sacrificial acts of which I was the agent shall henceforth be performed by you.' And all the worlds to be won—whether already conquered or not—find their unity in the single word 'world'; henceforth you are the world, and those worlds are to be conquered by you. From now on, the duty belonging to me regarding study, sacrifice, and the conquest of worlds...
Close to the Sanskrit
The father performs the transfer of his own activities in this manner; therefore this rite is named sampratti. At what time should this be performed? The scripture says: when that father, by seeing portents of death and the like, thinks 'I am going to die, I will die,' then he calls his son and says: 'You are Brahman, you are sacrifice, you are the world.' The son, thus addressed, replies. But he, having been previously instructed, knows that this is to be done by him; therefore he says: 'I am Brahman, I am sacrifice, I am the world.' This pair of sentences constitutes the dialogue. Considering the meaning of this to be obscure, the scripture proceeds to explain it: whatever study remains—recited, learned, or unlearned—all of that finds unity in the single word 'Brahman.' Whatever study of the Veda was to be done by me for this long duration, from now on let that study be yours, and let its agency be yours—this is the meaning. Similarly, whatsoever sacrifices ought to be performed and were performed or not performed by me, unity of all those is in the single word 'sacrifice.' Whatever sacrifices had me as their agent, from now on let those sacrifices be yours, let them have you as their agent—this is the meaning. Whatsoever worlds were to be won by me—won or unwon—unity of all those is in the word 'world'; from now on you are the world, they are to be won by you. From now on by me the duty of studying, sacrificing, and conquering worlds...