KaṭhUp, 1, 14.2 anantalokāptim atho pratiṣṭhāṃ viddhi tvam etaṃ nihitaṃ guhāyām //

KaṭhUp, 1, 15.2 sa cāpi tat pratyavadad yathoktam athāsya mṛtyuḥ punar āha tuṣṭaḥ //

KaṭhUp, 4, 2.2 atha dhīrā amṛtatvaṃ viditvā dhruvam adhruveṣv iha na prārthayante //

KaṭhUp, 6, 14.2 atha martyo 'mṛto bhavaty atra brahma samaśnute //

KaṭhUp, 6, 15.2 atha martyo 'mṛto bhavaty etāvaddhyanuśāsanam //

KaṭhUp, 6, 18.1 mṛtyuproktāṃ naciketo 'tha labdhvā vidyām etāṃ yogavidhiṃ ca kṛtsnam /