Matsya Purana — The Maheshvara Vow: Śiva-Caturdaśī Vrata
चतुर्दश्यां निराहारः सम्यगभ्यर्च्य शंकरम् सुवर्णवृषभं दत्त्वा भोक्ष्यामि च परे ऽहनि //
caturdaśyāṃ nirāhāraḥ samyagabhyarcya śaṃkaram suvarṇavṛṣabhaṃ dattvā bhokṣyāmi ca pare 'hani //
On the fourteenth lunar day, fasting without food, having duly worshipped Śaṅkara (Śiva), I shall give a golden bull as a gift, and then I shall eat on the following day.
This verse does not discuss pralaya; it prescribes a vrata discipline—fasting on Caturdaśī, worship of Śiva, and a specific gift (golden bull) followed by eating the next day.
It reflects the gṛhastha/royal duty of sustaining dharma through regulated fasting (upavāsa), proper deity-worship, and dāna; the sequence (fast → worship → gift → break-fast next day) models self-restraint and generosity.
The significance is ritual rather than architectural: Caturdaśī observance, Śiva-abhyarcana (formal worship), and the prescribed dāna of a suvarṇa-vṛṣabha (golden bull), with parāṇā (breaking the fast) on the following day.