Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.3.3

2.3.3.3

sa yadagnī ādhatte | tadenaṃ janayati taṃ janayitvā bibharti sa yathā haivaiṣa etamasmiṃloke janayitvā bibhartyevamu haivaiṣa etamamuṣmiṃloke janayitvā bibharti

Now when he establishes the two fires, he reproduces that (Agni); and having reproduced him, he maintains him; and as he reproduces and maintains him in this world, even so does he (Agni) reproduce and maintain him in yonder world.