Āścarya-kathana: Brāhmaṇa–Nāga Dialogue on Sūrya (Vivasvat) and the ‘Second Sun’ Phenomenon
त्रेतायुगादौ च ततो विवस्वान् मनवे ददौ । मनुश्न लोकभूत्यर्थ सुतायेक्ष्वाकवे ददौ,फिर त्रेतायुगके आरम्भमें सूर्यने मनुको और मनुने सम्पूर्ण जगत्के कल्याणके लिये अपने पुत्र इक्ष्वाकुको इसका उपदेश दिया
tretāyugādau ca tato vivasvān manave dadau | manuś ca lokabhūtyarthaṁ sutāyekṣvākave dadau ||
Vaiśampāyana said: “Then, at the beginning of the Tretā-yuga, Vivasvān (the Sun) imparted this teaching to Manu; and Manu, for the welfare of the whole world, taught it to his son Ikṣvāku.”
वैशम्पायन उवाच