CHAPTER 18 · VERSE 21
Bhagavad Gita 18.21
पृथक्त्वेन तु यज्ज्ञानं नानाभावान्पृथग्विधान्। वेत्ति सर्वेषु भूतेषु तज्ज्ञानं विद्धि राजसम्॥
That knowledge which sees living entities as distinct, separate, and manifold, perceiving diversity everywhere, know that knowledge to be Rajasic (passionate).
Rajasic knowledge focuses heavily on differences, divisions, boundaries, and separation.