Śatapatha Brāhmaṇa ("of a hundred paths") 7.4.2.18

7.4.2.18

sa yadamūmevopadadhyāt | nemāmapaśiṃṣyātkṣipre hāsmāllokādyajamānaḥ preyādatha yadimāmapaśinaṣṭi yadevāsyedam mānuṣaṃ rūpaṃ tadasyaitadapaśinaṣṭi tatho hānenātmanā sarvamāyureti

Now were he only to lay down that (golden man), and not to let this dviyagus (brick) remain, the Sacrificer surely would quickly pass away from this world; but now that he allows this (brick) to remain, he thereby leaves to him this human form of his; and so he attains with this body the full (measure of) life.