उपनयनम्Upanayana, investiture with the sacred thread
Verse 203
इन्द्रस्य ब्रह्मचारी त्वमाचार्यस्ते हुताशनः । इत्युक्त्वा सद्गुरुः पश्चाद्देवेभ्यस्तं समर्पयेत् ॥ २०३ ॥
indrasya brahmacārī tvamācāryastē hutāśanaḥ | ityuktvā sadguruḥ paścāddēvēbhyastaṁ samarpayēt || 203 ||
Translation
"You are the brahmacārin of Indra; the fire is your teacher." Having said this, the true guru should then entrust him to the gods:
Word by word
- indrasya
- of Indra
- brahmacārī
- the brahmacārin
- tvam
- (tvam) you
- ācāryaḥ
- (ācāryaḥ) teacher
- tē
- your
- hutāśanaḥ
- the fire
- iti
- thus
- uktvā
- having said
- sadguruḥ
- (sadguruḥ) the true guru
- paścāt
- (paścāt) then
- dēvēbhyaḥ
- (devebhyaḥ) to the gods
- taṁ
- him
- samarpayēt
- should entrust
Meaning
The human guru at once points beyond himself: the boy belongs to Indra, and Agni is his ācārya, because by offering into the fire he will grow in knowledge.

Commentary
Hariharānanda Bhāratī’s Sanskrit commentary, translated
"Indrasya" and the rest. Saying to the pupil, "Child, you are the brahmacārin of Indra; the fire is your ācārya, your teacher," the true guru should afterwards entrust that pupil to the gods.