RV 6.67.8
ता जिह्वया सदम् एदं सुमेधा आ यद् वां सत्यो अरतिर् ऋते भूत् । तद् वाम् महित्वं घृतान्नाव् अस्तु युवं दाशुषे वि चयिष्टम् अंहः ॥
tā jihvayā sadam edaṃ sumedhā ā yad vāṃ satyo aratir ṛte bhūt | tad vām mahitvaṃ ghṛtānnāv astu yuvaṃ dāśuṣe vi cayiṣṭam aṃhaḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
So with your tongue come ever, when your envoy, faithful and very wise, attends our worship. Nourished by holy oil! he this your glory: annihilate the sacrificer's trouble.
Translated by Ralph T. H. Griffith (1896)