Rigveda 4.2.1

वामदेवो गौतमः। अग्निः। त्रिष्टुप्। · vāmadevo gautamaḥ | agniḥ | triṣṭup |

यो मर्त्ये॑ष्व॒मृत॑ ऋ॒तावा॑ दे॒वो दे॒वेष्व॑र॒तिर्नि॒धायि॑ ।होता॒ यजि॑ष्ठो म॒ह्ना शु॒चध्यै॑ ह॒व्यैर॒ग्निर्मनु॑ष ईर॒यध्यै॑॥

yo martyeṣvamṛta ṛtāvā devo deveṣvaratirnidhāyi |hotā yajiṣṭho mahnā śucadhyai havyairagnirmanuṣa īrayadhyai ||

Our plain-language meaning of this verse is waiting for scholar review.