18.19 Each of three kinds Krishna speaks

ज्ञानं कर्म च कर्ता च त्रिधैव गुणभेदतः
प्रोच्यते गुणसंख्याने यथावच्छृणु तान्यपि

jñānaṁ karma cha kartā cha tridhaiva guṇa-bhedataḥ
prochyate guṇa-saṅkhyāne yathāvach chhṛiṇu tāny api

Knowledge, action and the doer are each of three kinds, distinguished by the strands. Hear of them too.

Explanation

Each of three kinds.

Knowledge, action and the doer, distinguished by the strands. The announcement of the chapter's long taxonomy.

Chapter 14 named the strands, chapter 17 applied them to food and offering, and chapter 18 applies them to the components of doing itself. The scheme is being run to its end.

Word by word

jñānam: knowledge
karma: action
cha: and
kartā: doer
cha: also
tridhā: of three kinds
eva: certainly
guṇa-bhedataḥ: distinguished according to the three modes of material nature
prochyate: are declared
guṇa-saṅkhyāne: Sānkhya philosophy, which describes the modes of material nature
yathā-vat: as they are
śhṛiṇu: listen
tāni: them
api: also