Yoga Sutras of Patanjali · 2.18
प्रकाशक्रियास्थितिशीलं भूतेन्द्रियात्मकं भोगापवर्गार्थं दृश्यम् ॥१८॥
prakāśa-kriyā-sthiti-śīlaṁ bhūtendriyātmakaṁ bhogāpavargārthaṁ dṛśyam
The seen has the nature of illumination, activity, and inertia; it consists of the elements and the senses; and its purpose is experience and liberation.
— Yoga Sutras of Patanjali 2.18
Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).