Bhagavad Gita Chapter 2.23
nainaḿ chindanti śastrāṇi
nainaḿ dahati pāvakaḥ
na cainaḿ kledayanty āpo
na śoṣayati mārutaḥ
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.