स य एषोऽणिमैतदात्म्यमिदं सर्वं तत् सत्यं स आत्मा तत्त्वमसि श्वेतकेतो इति भूय एव मा भगवान्विज्ञापयत्विति तथा सोम्येति होवाच ॥ ६.१५.३ ॥
॥ इति पञ्चदशः खण्डः ॥sa ya eṣo’ṇimaitadātmyamidaṃ sarvaṃ tat satyaṃ sa ātmā tattvamasi śvetaketo iti bhūya eva mā bhagavānvijñāpayatviti tathā somyeti hovāca || 6.15.3 ||
|| iti pañcadaśaḥ khaṇḍaḥ ||3. ‘That which is the subtlest of all is the Self of all this. It is the Truth. It is the Self. That thou art, O Śvetaketu.’ [Śvetaketu then said,] ‘Sir, please explain this to me again.’ ‘Yes, Somya, I will explain it again,’ replied his father.
Word-for-word explanation:
Saḥ yaḥ, that which; eṣaḥ, this; aṇimā, the subtlest of all; idam sarvam aitadātmyam, the Self of all this; tat satyam, that is the Truth; saḥ ātmā, that is the Self; tat, that; tvam, you; asi, are; śvetaketo iti, O Śvetaketu; bhagavān, sir; bhūyaḥ eva, again; mā, to me; vijñāpayatu iti, will you please explain; tathā, so be it; somya iti, O Somya; ha uvāca, he [the father] said. Iti pañcadaśaḥ khaṇḍaḥ, here ends the fifteenth section.