Amāvasyā-Pitṛtarpaṇa: Purūravas and the Soma-Based Ancestral Offering (अमावस्या-पितृतर्पण / सोमतर्पण-विधि)
स गच्छति तदा द्रष्टुं दिवाकरनिशाकरौ / अमावस्याममावास्यां मातामहपितामहौ
sa gacchati tadā draṣṭuṃ divākaraniśākarau / amāvasyāmamāvāsyāṃ mātāmahapitāmahau
Then, on that very Amāvasyā, he goes to behold Divākara (the Sun) and Niśākara (the Moon); on that Amāvasyā the maternal grandsire and the paternal grandsire, the two Pitṛs, are present.