Śatapatha Brāhmaṇa ("of a hundred paths") 6.8.2.4

6.8.2.4

apsvagne sadhiṣṭaveti | apsvagne yoniṣṭavetyetatsauṣadhīranurudhyasa ityoṣadhīrhyeṣo 'nurudhyate garbho sanjāyase punariti garbho hyeṣa sanjāyate punargarbho asyoṣadhīnāṃ garbho vanaspatīnām garbho viśvasya bhūtasyāgne garbho apāmasīti tadenamasya sarvasya garbhaṃ karoti

[Vâg. S. XII, 36; Rik S. VIII, 43, 9] 'In the waters, O Agni, is thy seat,'--that is, 'in the waters, O Agni, is thy womb; as such thou clingest to the plants,'--for he does indeed cling to (love) the plants,--'being in (their) womb thou art born again,'--when he is in the womb he is indeed born again,--[Vâg. S. XII, 37] 'Thou art the child of the herbs, the child of the trees, the child of all that is, O Agni, thou art the child of the waters;'--he thus makes him (Agni) the child of this entire (universe).