Matsya Purana — Sādhāraṇa Śrāddha: General Ancestral Rite
सम्पन्नम् इत्यभ्युदये दद्यादर्घ्यं द्वयोर् द्वयोः युग्मा द्विजातयः पूज्या वस्त्रकार्तस्वरादिभिः //
sampannam ityabhyudaye dadyādarghyaṃ dvayor dvayoḥ yugmā dvijātayaḥ pūjyā vastrakārtasvarādibhiḥ //
At an auspicious celebration, saying “sampannam” (“May it be accomplished”), one should offer arghya in pairs, two by two. The dvijas (twice-born) should likewise be honored as pairs, with garments, cut pieces of cloth, gold, and similar gifts.
This verse does not address pralaya; it focuses on auspicious household rites and the proper honoring of the twice-born through arghya and gifts.
It prescribes gṛhastha (and by extension royal) ceremonial etiquette: during auspicious events one should welcome and honor dvijas systematically—offering arghya and giving appropriate gifts such as cloth and gold.
The ritual significance is the paired offering: arghya and honor to dvijas should be done ‘two by two,’ along with dakṣiṇā-like gifts (cloth, gold, etc.), reflecting formalized maṅgala-vidhi procedure.