Yoga Sutras of Patanjali · 3.1

देशबन्धश्चित्तस्य धारणा॥१॥

deśabandhaścittasya dhāraṇā

Dharana — concentration — is the binding of the mind-stuff to one place. The wandering attention is gathered, tethered, fixed upon a single locus.

— Yoga Sutras of Patanjali 3.1

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).