RV 10.88.19
यावन्मात्रम् उषसो न प्रतीकं सुपर्ण्यो वसते मातरिश्वः । तावद् दधात्य् उप यज्ञम् आयन् ब्राह्मणो होतुर् अवरो निषीदन् ॥
yāvanmātram uṣaso na pratīkaṃ suparṇyo vasate mātariśvaḥ | tāvad dadhāty upa yajñam āyan brāhmaṇo hotur avaro niṣīdan ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
As great as is the fair-winged Morning's presence to him who dwells beside us, Matarisvan! Is what the Brahman does when he approaches to sacrifice and sits below the Hotar.
Translated by Ralph T. H. Griffith (1896)