Amāvasyā-Pitṛtarpaṇa: Purūravas and the Soma-Based Ancestral Offering (अमावस्या-पितृतर्पण / सोमतर्पण-विधि)
यदीक्षेते व्यतीपाते दिवा पूर्णे परस्परम् / चन्द्रार्कावपराह्णे तु पूर्णात्मानौ तु पूर्णिमा
yadīkṣete vyatīpāte divā pūrṇe parasparam / candrārkāvaparāhṇe tu pūrṇātmānau tu pūrṇimā
When, at Vyatīpāta, in the fullness of day, Moon and Sun behold one another face to face, and in the afternoon both stand in their fullness—that is Pūrṇimā.