अथास्य दक्षिणं कर्णमभिनिधाय वाग्वागिति त्रिः ।अथ दधि मधु घृतं संनीयानन्तर्हितेन जातरूपेण प्राशयति ।भूस्ते दधामि भुवस्ते दधामि स्वस्ते दधामि भूर्भुवः स्वः सर्वं त्वयि दधामीति ॥६,४.२५ ॥
In plain words
Then, putting his mouth to the child's right ear, he says thrice, "Speech, speech." Then, mixing curd, honey and butter together, he feeds him with gold, nothing intervening, saying: "I place bhūḥ in thee; I place bhuvaḥ in thee; I place svaḥ in thee. Bhūr bhuvaḥ svaḥ — all of it I place in thee."
The commentators
Bṛhadāraṇyakopaniṣadbhāṣyam· bhāṣya
अथास्य दक्षिणं कर्णमभिनिधाय स्वं मुखम् 'वाग्वाक्' इति त्रिजपेत् । अथ दधि मधु घृतं संनीय अनन्तर्हितेन अव्य- वहितेन जातरूपेण हिरण्येन प्राशयति एतैर्मन्त्रैः प्रत्येकम् ॥
In plain words
He brings his mouth right up to the child's right ear and quietly says 'Vāk, Vāk' three times. Then he mixes curds, honey, and ghee, and feeds the child pure, unblended gold — with a mantra spoken for each act.
Close to the Sanskrit
Then, having placed his own mouth close to this [child's] right ear, [saying] 'Vāk, Vāk,' thus, he should mutter thrice. Then, having brought together curds, honey and ghee, he feeds [him] with undivided, unmixed native gold — with these mantras, for each one.