Matsya Purana — The Observance of Ananta-Tritiya
चैत्रे तु मल्लिकाशोकैर् वैशाखे गन्धपाटलैः ज्येष्ठे कमलमन्दारैर् आषाढे च नवाम्बुजैः कदम्बैरथ मालत्या श्रावणे पूजयेत्सदा //
caitre tu mallikāśokair vaiśākhe gandhapāṭalaiḥ jyeṣṭhe kamalamandārair āṣāḍhe ca navāmbujaiḥ kadambairatha mālatyā śrāvaṇe pūjayetsadā //
In the month of Caitra one should worship with mallikā (jasmine) and aśoka blossoms; in Vaiśākha with fragrant pāṭalā flowers; in Jyeṣṭha with lotus and mandāra blooms; and in Āṣāḍha with fresh, newly opened lotuses. In Śrāvaṇa, one should always worship with kadamba flowers and with mālatī.
This verse does not discuss pralaya; it focuses on orderly ritual observance—selecting seasonally appropriate flowers for worship across specific lunar months.
It frames a practical dharma of regular devotion: a householder (and by extension a king setting public religious standards) should maintain consistent worship using proper, seasonally available offerings rather than arbitrary materials.
Ritually, it outlines a pūjā-krama tied to the sacred calendar—matching offerings (especially flowers) to months—useful for temple liturgy planning and standardized daily/seasonal worship schedules.