Yoga Sutras of Patanjali · 1.11

अनुभूतविषयासम्प्रमोषः स्मृतिः ॥११॥

anubhūtaviṣayāsampramoṣaḥ smṛtiḥ

Memory is the retention, without loss, of an object previously experienced.

— Yoga Sutras of Patanjali 1.11

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).