द्वासप्ततिसहस्राणि नाडीद्वाराणि पञ्जरे । सुषुम्णा शाम्भवी शक्तिः शेषास्त्वेव निरर्थकाः ॥ ४.१८ ॥

dvāsaptatisahasrāṇi nāḍīdvārāṇi pañjare । suṣumṇā śāmbhavī śaktiḥ śeṣāstveva nirarthakāḥ ॥ 4.18 ॥

In this body there are 72 000 openings of the Nâdis; of these, the Sushumnâ, which has the Shâmhhavî Shakti in it, is the only important one - the rest are useless.