Atharvaveda 12.2.10

12.2.10

kravyā́dam agníṃ śaśamānám ukthyàṃ prá hiṇomi pathíbhiḥ pitr̥yā́ṇaiḥ |
mā́ devayā́naiḥ púnar ā́ gā átraiváidhi pitŕ̥ṣu jāgr̥hi tvám ||10||

The flesh-eating Agni, active, praiseworthy, I send forth by the roads that the Fathers go; come thou not back by those that the gods go; be thou just there (átra); watch thou over the Fathers.