Canonical Ref: YS 2.21
Sanskrit (Devanāgarī)
तदर्थ एव दृश्यस्यात्मा
English Scholarly Translation
The seer and the seen exist for each others purposes.
व्याख्या / Traditional Commentary & Notes
Classical Exegesis
The essence [ātmā] of the seen [dṛśyasya] exists solely [eva] for the purpose [tadartha] of the Seer [Purusha]
Canonical CTS URN Reference
Pātañjala Yoga Sūtras, YS 2.21. Poorvam Open Research Engine (PORE) Corpus.