Matsya Purana — Rasakalyāṇinī Vrata: Magha-based Goddess Worship
लड्डुकाञ्छ्वेतवर्णांश्च संयावमथ पूरिकाः घारिकान् अप्यपूपांश्च पिष्टापूपांश्च मण्डकान् //
laḍḍukāñchvetavarṇāṃśca saṃyāvamatha pūrikāḥ ghārikān apyapūpāṃśca piṣṭāpūpāṃśca maṇḍakān //
White-colored laddus (laddūka), sweet saṃyāva, stuffed pūrikās, ghārikās, various apūpas (cakes), flour-made apūpas (piṣṭa-apūpa), and maṇḍakas (sweet pastries) should be prepared and offered.
This verse is not about pralaya; it focuses on ritual and hospitality—specifically the recommended sweet offerings to be prepared for religious rites.
It supports gṛhastha-dharma: maintaining purity and generosity through proper preparation of naivedya and food-gifts (dāna) during rites like śrāddha and other religious observances.
The significance is ritual (not architectural): it enumerates specific traditional sweets (laddus, apūpas, maṇḍakas, etc.) considered appropriate offerings in prescribed ceremonies.