Matsya Purana — The Rite of Donating the ‘Mountain of Ghee’
हंससारसयुक्तेन किङ्किणीजालमालिना विमानेनाप्सरोभिश्च सिद्धविद्याधरैर् वृतः विहरेत्पितृभिः सार्धं यावदाभूतसंप्लवम् //
haṃsasārasayuktena kiṅkiṇījālamālinā vimānenāpsarobhiśca siddhavidyādharair vṛtaḥ viharetpitṛbhiḥ sārdhaṃ yāvadābhūtasaṃplavam //
Mounted in a celestial chariot (vimāna) yoked with swans (haṃsa) and sārasas (cranes), adorned with garlands of tinkling bells, and surrounded by apsarases as well as Siddhas and Vidyādharas, he would sport together with the Pitṛs (ancestral spirits) until the cosmic dissolution (pralaya).
It indicates that the merit-born enjoyments in Pitṛ-loka endure only up to the cosmic dissolution (ābhūta-saṃplava), after which the cosmic cycle resets.
It supports the Matsya Purana’s Śrāddha/Pitṛ-dharma ethic: by properly honoring ancestors, a householder (and by extension a king as model patron of dharma) gains exalted posthumous states and companionship of the Pitṛs.
Ritually, it underscores Śrāddha and Pitṛ-tarpaṇa as merit-producing acts; architecturally, the “vimāna” here is a celestial vehicle (not a temple superstructure), used as imagery for the refined, divine status attained.