Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 26


आत्मनश्च परस्यापि य: करोत्यन्तरोदरम् ।तस्य भिन्नद‍ृशो मृत्युर्विदधे भयमुल्बणम् ॥ २६ ॥


ātmanaś ca parasyāpiyaḥ karoty antarodaramtasya bhinna-dṛśo mṛtyurvidadhe bhayam ulbaṇam


As the blazing fire of death, I cause great fear to whoever makes the least discrimination between himself and other living entities because of a differential outlook.


There are bodily differentiations among all varieties of living entities, but a devotee should not distinguish between one living entity and another on such a basis; a devotee’s outlook should be that both the soul and Supersoul are equally present in all varieties of living entities.