Aitareya Āraṇyaka 2.7

2.7.p1

vāṅ me manasi pratiṣṭhitā.
mano me vāci pratiṣṭhitam.
āvir ā/vīr ma edhi.
devasya ma āṇī sthaḥ.
śrutaṃ me mā prahāsīr (T, and Scheftelowitz, Die Apokryphen des Ṛgveda.).
anenādhī/tenāhorātrān saṃdadhāmy.
ṛtaṃ vadiṣyāmi.
satyaṃ vadiṣyāmi.
tan mām avatu.
tad vaktāram avatv.
avatu mām.
avatu vaktāram, avatu vaktāram \\
\\ ity aitareyadvitīyāraṇyake saptamo 'dhyāyaḥ \\

My speech rests in the mind, my mind rests in speech. Appear to me (thou, the Highest Self)! You (speech and mind) are the two pins (that hold the wheels) of the Veda. May what I have learnt not forsake me. I join day and night with what I have learnt. I shall speak of the real, I shall speak the true. May this protect me, may this protect the teacher! May it protect me, may it protect the teacher, yea, the teacher!