One verse

Bhagavad Gita 2.25

2.25

अव्यक्तोऽयमचिन्त्योऽयमविकार्योऽयमुच्यते | तस्मादेवं विदित्वैनं नानुशोचितुमर्हसि ||२-२५||

avyakto.ayamacintyo.ayamavikāryo.ayamucyate . tasmādevaṃ viditvainaṃ nānuśocitumarhasi ||2-25||

avyaktaḥ
invisible
ayam
this soul
acintyaḥ
inconceivable
ayam
this soul
avikāryaḥ
unchangeable
ayam
this soul
ucyate
is said
tasmāt
therefore
evam
like this
viditvā
knowing it well
enam
this soul
na
do not
anuśocitum
to lament
arhasi
you deserve

It is said that the soul is invisible, inconceivable and immutable. Knowing this, you should not grieve for the body.