The Yoga of Liberation by Renunciation

Krishna explains rajasic knowledge. 'Pṛthaktvena tu yaj jñānaṁ nānā-bhāvān pṛthag-vidhān vetti sarveṣu bhūteṣu'—that knowledge (yat jñānam) which sees (vetti) by separateness (pṛthaktvena) various separate natures (nānā-bhāvān) of different kinds (pṛthag-vidhān) in all beings (sarveṣu bhūteṣu). 'Taj jñānaṁ viddhi rājasam'—know (viddhi) that knowledge (tat jñānam) to be rajasic (rājasam). This is rajasic knowledge: seeing diversity and separateness, focusing on differences rather than unity. While sattvic knowledge sees the one essence in all, rajasic knowledge sees various separate natures. This knowledge is driven by rajas (passion), which creates division and sees things as separate entities competing or interacting. It's not wrong—it recognizes real differences—but it doesn't see the underlying unity. This is the middle kind of knowledge: better than tamasic (which is ignorant) but not as complete as sattvic (which sees unity).