Verse 66

लब्धात्मानो विनश्यन्ति संबन्धक्षण एव ते ।ते तमांसीव दीपस्य दृष्टा एव व्रजन्त्यलम्

In plain words

Having gained their being, they perish in that very instant of contact; like darkness before a lamp, the moment they are seen, they are gone entirely.