Matsya Purana — The Greatness of the Vibhūti-Dvādaśī Vow: Pushkara
वेश्यानङ्गवती नाम विभूतिद्वादशीव्रतम् समाप्तौ माघमासस्य लवणाचलमुत्तमम् //
veśyānaṅgavatī nāma vibhūtidvādaśīvratam samāptau māghamāsasya lavaṇācalamuttamam //
A courtesan named Naṅgavatī, having completed the Vibhūti-Dvādaśī vow at the close of the month of Māgha, attained the excellent holy place called Lavaṇācala.
This verse does not discuss pralaya; it illustrates a vrata’s phala (result), showing that disciplined observance can elevate a person to a sacred destination regardless of social status.
It underscores the householder ethic of vrata-dharma: completing a prescribed observance (especially on Dvādaśī in Māgha) is portrayed as spiritually efficacious and socially inclusive, encouraging rulers and householders to support and practice such rites.
The ritual significance is the completion (samāpti) of the Vibhūti-Dvādaśī vrata at Māgha’s end; the verse emphasizes correct observance and its fruit (attaining a tīrtha/holy mountain), rather than temple architecture or vastu rules.