Amāvasyā-Pitṛtarpaṇa: Purūravas and the Soma-Based Ancestral Offering (अमावस्या-पितृतर्पण / सोमतर्पण-विधि)
द्वौ द्वौ लवावमावास्या स कालः पर्वसंधिषु / द्व्यक्षर कुहुमात्रश्च पर्वकालास्त्रयः स्मृताः
dvau dvau lavāvamāvāsyā sa kālaḥ parvasaṃdhiṣu / dvyakṣara kuhumātraśca parvakālāstrayaḥ smṛtāḥ
On the amāvasyā, at the junctions of the parva there is a span of two-and-two lava; “dvyakṣara” and the mere “kuhū-mātra” are remembered as the three sacred parva-times.