A person with average intelligence does not think the head and other parts of the body to be separate. Similarly, My devotee does not differentiate Viṣṇu, the all-pervading Personality of Godhead, from any thing or any living entity.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यथा पुमान् न स्वाङ्गेषु शिरः पाण्यादिषु क्वचित् । पारक्यबुद्धिं कुरुते एवं भूतेषु मत्परः
yathā pumān na svāṅgeṣu śiraḥ pāṇyādiṣu kvacit | pārakyabuddhiṃ kurute evaṃ bhūteṣu matparaḥ
SB 4.7.53