Śatapatha Brāhmaṇa ("of a hundred paths") 7.4.2.13

7.4.2.13

taṃ yatra devāḥ samaskurvam | stadasminnetam prāṇaṃ rasam madhyato 'dadhustathaivāsminnayametaddadhāti tāmanantarhitāṃ svayamātṛṇāya upadadhātīyaṃ vai svayamātṛṇānannarhitāstadasyā oṣadhīrdadhātyuttarāmuttarāstadasyā oṣadhīrdadhāti sā syātsamūlā sāgrā kṛtsnatāyai yathā svayamātṛṇāyāmupahitā bhūmim prāpnuyādevamupadadhyādasyāṃ hyevaitā jāyanta imāmanu prarohanti

When the gods restored him, they put that life-sap, the breath, inside him; and in like manner does this (Sacrificer) now put it into him. He lays it down immediately on the naturally-perforated (brick); the naturally-perforated one being this earth, he thus places the plants immediately on this earth. Upon (the brick he lays it): upon this earth he thus places the plants. It should be with root and top, for completeness' sake. Let him lay it on in such manner that while lying on the naturally-perforated (brick) it touches the ground (with its tops), for on this earth those (plants) spring up, and along her they grow.