RV 10.53.1
यम् ऐच्छाम मनसा सो ऽयम् आगाद् यज्ञस्य विद्वान् परुषश् चिकित्वान् । स नो यक्षद् देवताता यजीयान् नि हि षत्सद् अन्तरः पूर्वो अस्मत् ॥
yam aicchāma manasā so 'yam āgād yajñasya vidvān paruṣaś cikitvān | sa no yakṣad devatātā yajīyān ni hi ṣatsad antaraḥ pūrvo asmat ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
He hath arrived, he whom we sought with longing, who skilled in sacrifice well knows its courses. Let him discharge his sacrificial duties: let him sit down as Friend who was before Us.
Translated by Ralph T. H. Griffith (1896)