Atharvaveda 11.3.41

11.3.41

[4.10]a) tátaś cainam anyénórasā prā́śīr yéna caitáṃ pū́rva ŕ̥ṣayaḥ prā́śnan |
[4.10]b) kr̥ṣyā́ ná rātsyasī́ty enam āha |
[4.10]c) táṃ vā́ aháṃ nā́rvā́ñcaṃ ná párāñcaṃ ná pratyáñcam |
[4.10]d) pr̥thivyórasā |
[4.10]e) ténainaṃ prā́śiṣaṃ ténainam ajīgamam |
[4.10]f) eṣá vā́ odanáḥ sárvāṅgaḥ sárvaparuḥ sárvatanūḥ |
[4.10]g) sárvāṅga evá sárvaparuḥ sárvatanūḥ sáṃ bhavati yá eváṃ véda ||41|| [10]

If thou hast eaten it with another breast than that with which the ancient seers ate this, thou wilt not prosper with plowing: thus one says to him; it verily [have] I not [eaten] coming hither, nor retiring, nor coming on; with the earth as breast, therewith have I etc. etc.