Agniveshyagrihyasutra 3.2.3.1

3.2.3.1

pṛthivī te pātraṃ dyaurapidhānaṃ brahmaṇastvā mukhe juhomi brāhmaṇānāṃ tvā vidyāvatāṃ prāṇāpānayorjuhomyakṣitamasi mā pitṝṇāṃ kṣeṣṭhā amutrāmuṣmin loke pṛthivī samantassame 'gnirupadraṣṭā dattasyāpramādāya ṛcaste mahimā \

“The earth is your vessel, the sky is your cover; I offer you into the mouth of Brahman; I offer you into the in-breath and out-breath of Brahmins endowed with learning. You are imperishable; may you not perish for the ancestors in yonder world! The earth is all around me; Agni is the witness to prevent negligence in what is given. The Ṛg-verses are your greatness!”