Bhagavad-gītā 15.7

mamaivāṁśo jīva-loke

jīva-bhūtaḥ sanātanaḥ

manaḥ ṣaṣṭhānīndriyāṇi

prakṛti-sthāni karṣati

(Bhagavad-gītā 15.7)

“The living entities in this conditioned world are My eternal fragmental parts. Due to conditioned life, they are struggling very hard with the six senses, which include the mind.”