KAṬHA UPANISHAD · 1.1.18

त्रिणाचिकेतस्त्रयमेतद्विदित्वा
य एवं विद्वाँश्चिनुते नाचिकेतम् ।
स मृत्युपाशान् पुरतः प्रणोद्य
शोकातिगो मोदते स्वर्गलोके ॥ १८॥

triṇāciketastrayametadviditvā
ya evaṃ vidvām̐ścinute nāciketam ।
sa mṛtyupāśān purataḥ praṇodya
śokātigo modate svargaloke ॥ 18॥

“When a man has the three flames of Nachiketas and knows this that is Triple, when so knowing he beholds the Flame of Nachiketas, then he thrusts from in front of him the meshes of the snare of death; leaving sorrow behind him he in heaven rejoices.

Sri Aurobindo · CWSA 18, p. 105