Srimad Bhagavatam — Saptama Skandha, Shloka 24
Hiraṇyakaśipu’s Wrath, the Assault on Vedic Culture, and the Boy-Yamarāja’s Teaching on the Soul
एवं गुणैर्भ्राम्यमाणे मनस्यविकल: पुमान् । याति तत्साम्यतां भद्रे ह्यलिङ्गो लिङ्गवानिव ॥ २४ ॥
evaṁ guṇair bhrāmyamāṇe manasy avikalaḥ pumān yāti tat-sāmyatāṁ bhadre hy aliṅgo liṅgavān iva
慈母啊，同样地，当心识被自然诸性（guṇa）的动荡所迷转时，众生虽本无微细粗重之身的系缚，却如同有身一般，误以为自己从一种境况变到另一种境况。
As stated in Śrīmad-Bhāgavatam (10.84.13) :
FAQs
This verse explains that when the mind is driven by the modes of nature, the jīva seems to take on the modes’ qualities, even though the soul is actually beyond material designation.
He is arguing that bondage is due to identification with the mind and modes; the soul itself is not inherently marked by matter, but appears conditioned when it identifies with the guṇas.
By recognizing that shifting thoughts and moods are movements of the mind under the guṇas, one can practice detachment and steady spiritual focus rather than defining oneself by temporary mental states.