पृथक्त्वेन तु यज्ज्ञानं नानाभावान्पृथग्विधान् | वेत्ति सर्वेषु भूतेषु तज्ज्ञानं विद्धि राजसम् ||१८-२१||
pṛthaktvena tu yajjñānaṃ nānābhāvānpṛthagvidhān . vetti sarveṣu bhūteṣu tajjñānaṃ viddhi rājasam ||18-21||
18.21. That instrument-of-knowledge, by means of which one considers the varied natures of different sorts in all beings as [really] different-that is regarded to be of the Rajas (Strand).
Shri Purohit Swami
18.21 The knowledge which thinks of the manifold existence in all beings as separate - that comes from Passion.
Sri Abhinav Gupta
18.21 See Comment under 18.22
18.21 Whatever knowledge perceives in Brahmana etc., at the time of work, the entity known as the Atman as of diverse nature because the bodies of those beings are tall or fair and are fit to attain the fruits of work - know that knowledge to be Rajasika. The point is this: It is not a condemnation of the plurality of Atman. The Atman, though distinct, is uniform everywhere. The bodily attributes do not affect it. The knowledge lacking this understanding is stigmatised as Rajasa.
18.21 Tu, but; viddhi, know; tat, that; jnanam, knowledge; to be rajasam, originating from rajas; yat, which; sarvesu bhutesu, amidst all things; vetti, apprehends-since knowledge cannot be an agent of hends-since knowledge cannot be an agent of action, therefore the meaning implied is, ’that, knowledge৷৷.through which one apprehends৷৷.’-; nana-bhavan, the different entities; prthagvidhan, of various kinds, i.e., those possessing diverse characteristics and different from oneself; prthakrvena, as distinct, as separate in each body.
18.21 But that knowledge which sees all beings, by reason of their individuality, as entities of distinct nature - know that knowledge to be Rajasika.
18.21 But know that knowledge to be originating from rajas which, amidst all things, apprehends the different entities of various kinds as distinct [As possessing distinct selves.].
18.21 But that knowledge which sees in all beings various entities of distinct kinds as different from one another know thou that knowledge to be Rajasic.
18.21 पृथक्त्वेन as different from one another? तु but? यत् which? ज्ञानम् knowledge? नानाभावान् various entities? पृथग्विधान् of distinct kinds? वेत्ति knows? सर्वेषु (in) all? भूतेषु in beings? तत् that? ज्ञानम् knowledge? विद्धि know? राजसम् Rajasic.Commentary Knowledge which sees As knowledge cannot be an agent? this should be interpreted to mean knowledge by which one sees.Entities Selves or souls.Different from one another Regarding them as different in different bodies.The knowledge that is led by the idea of separateness is passionate. Enveloping as it does the manifold creation with the veil of separateness? it deludes even the wise man. Owing to passionate knowledge? beings appear to be separate and the perception of unity is also lost sight of. That knowledge which beholds multiplicity in created objects and differentiates them as being small or great? according to their form and size? is of passionate nature and tainted. A man with passionate knowledge sees diversity everywhere. He beholds the many only.Now I will explain to thee? O Arjuna? knowledge that is of the ality of darkness? in order that thou mayest avoid it.