The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Verse 334

अथास्य दक्षिणं कर्णमभिनिधाय वा-ग्वागिति त्रिरथ दधि मधु घृतँ संनी-यानन्तर्हितेन जातरूपेण प्राशयति ।भू-स्ते दधामि भुवस्ते दधामि स्वस्ते दधा-मि भूर्भुवःस्वः सर्वं त्वयि दधामीति ॥ २५ ॥

In plain words

Then he puts his mouth close to the child's right ear and says 'Vāk, Vāk' three times. He mixes curds, honey and ghee, and feeds the boy pure, unbroken gold, saying: 'I place Bhūḥ in you. I place Bhuvaḥ in you. I place Svaḥ in you. I place all three worlds — everything — in you.'

Close to the Sanskrit

Then, having leaned close to his right ear, [he says] 'Vāk, Vāk,' thus, thrice; then, having mixed curds, honey and ghee, he feeds [him] with undivided native gold: 'I place Bhūḥ in you, I place Bhuvaḥ in you, I place Svaḥ in you; I place Bhūḥ-Bhuvaḥ-Svaḥ, everything, in you,' thus.