वपुः कृशत्वं वदने प्रसन्नता नादस्फुटत्वं नयने सुनिर्मले ।अरोगता बिन्दुजयोऽग्निदीपनं नाडीविशुद्धिर्हठसिद्धिलक्षणम् ॥ २.७८ ॥

vapuḥ kṛśatvaṃ vadane prasannatā nādasphuṭatvaṃ nayane sunirmale । arogatā bindujayo'gnidīpanaṃ nāḍīviśuddhirhaṭhasiddhilakṣaṇam ॥ 2.78 ॥

The body becomes lean, the face glows with delight, the inner sound manifests, the eyes are pleasant, the body is healthy (without disease), the Bindu (ego) is suppressed, the Agni (Ojas, Tapas, vitality) increases, and the Nâdîs are purified - these are symptoms of success in Hatha Yoga.