Matsya Purana — The Maheshvara Vow: Śiva-Caturdaśī Vrata
पुनश्च कार्त्तिके मासे प्राप्ते संतर्पयेद्द्विजान् अन्नैर् नानाविधैर् भक्ष्यैर् वस्त्रमाल्यविभूषणैः //
punaśca kārttike māse prāpte saṃtarpayeddvijān annair nānāvidhair bhakṣyair vastramālyavibhūṣaṇaiḥ //
And again, when the month of Kārttika arrives, one should fully satisfy the dvija (the twice-born, i.e., Brāhmaṇas) with food of many kinds, with diverse edibles, and with gifts of garments, garlands, and ornaments.
This verse is not about pralaya; it teaches dharma during Kārttika—gaining merit through feeding and honoring the twice-born with food and gifts.
It outlines a key householder/royal duty: annadāna and honoring Brāhmaṇas in Kārttika by providing meals and respectful gifts (clothing, garlands, ornaments), reflecting social and ritual responsibility.
The ritual significance is the Kārttika-month observance of saṃtarpana—formal feeding and honoring of Brāhmaṇas—performed with offerings of food and auspicious gift-items, rather than any Vāstu/temple-building rule.