Bhagavad Gita 2.23

nainaḿ chindanti śastrāṇi

nainaḿ dahati pāvakaḥ

na cainaḿ kledayanty āpo

na śoṣayati mārutaḥ

SYNONYMS

na — never; enam — this soul; chindanti — can cut to pieces; śastrāṇi — weapons; na — never; enam — this soul; dahati — burns; pāvakaḥ — fire; na — never; ca — also; enam — this soul; kledayanti — moistens; āpaḥ — water; na — never; śoṣayati — dries; mārutaḥ — wind.

TRANSLATION

The soul can never be cut to pieces by any weapon, nor burned by fire, nor moistened by water, nor withered by the wind.

The purport is in http://vedabase.net/bg/2/23/en