Yoga Sutras of Patanjali · 2.39

अपरिग्रहस्थैर्ये जन्मकथंतासंबोधः ॥३९॥

aparigraha-sthairye janma-kathaṁtā-saṁbodhaḥ

When aparigraha is firmly established, knowledge of the how-and-why of birth arises.

— Yoga Sutras of Patanjali 2.39

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).