Chāndogya Upaniṣad 8.3.2

8.3.2

atha ye cāsyeha jīvā ye ca pretā yac cānyad icchan na labhate sarvaṃ tad atra gatvā vindate \
atra hy asyaite satyāḥ kāmā anṛtāpidhānāḥ \
tad yathāpi hiraṇyanidhiṃ nihitam akṣetrajñā upary upari sañcaranto na vindeyuḥ \
evam evemāḥ sarvāḥ prajā ahar ahar gacchantya etaṃ brahmalokaṃ na vindanty anṛtena hi pratyūḍhāḥ \\803.2\

So, just as those who do not know the spot might go over a hid treasure of gold again and again, but not find it, even so all creatures here go day by day to that Brahma-world (brahma-loka) [in deep sleep], but do not find it; for truly they are carried astray by what is false.

For truly, whoever of one's [fellows] departs hence, one does not get him [back] to look at here. 2. But those of one's [fellows] who are alive there, and those who have departed, and whatever else one desires but does not get—all this one finds by going in there [i.e. in the Soul]; for there, truly, are those real desires of his which have a covering of what is false.