The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Avatarika

Avatarika

एवं विद्यादिसंभारसंभृतो देहान्तरं प्रतिपद्यमानः, मुक्त्वा पूर्वं देहम्, पक्षीव वृक्षान्तरम्, देहान्तरं प्रतिपद्यते ; अथवा आतिवाहिकेन शरीरान्तरेण कर्मफलजन्मदेशं नीयते ।किंचात्रस्थस्यैव सर्वगतानां करणानां वृत्तिलाभो

In plain words

So the self, carrying everything it has gathered — its knowledge, its actions, its old habits of mind — lets go of this body the way a bird leaves one tree for another, and takes up a new one. Or, some say, it travels there in a subtle carrier-body suited to where its actions are sending it. But then a further question opens up: if the senses already reach everywhere, does something at the new place gain the use of them even without having to travel...

Close to the Sanskrit

Thus, one who has gathered the provisions beginning with knowledge, while attaining another body — having abandoned the former body, like a bird [going to] another tree, attains another body; or else he is led by a transitional body to the place of birth [determined by] the fruit of action. Moreover, is there an attainment of function of the organs, which are all-pervading, even for one remaining right here...