Matsya Purana — Procedure for Going to Prayaga and the Greatness of the Ganga
अथ संध्यावटे रम्ये ब्रह्मचारी जितेन्द्रियः उपवासी शुचिः संध्यां ब्रह्मलोकमवाप्नुयात् //
atha saṃdhyāvaṭe ramye brahmacārī jitendriyaḥ upavāsī śuciḥ saṃdhyāṃ brahmalokamavāpnuyāt //
Then, at the delightful Sandhyāvaṭa (the sacred banyan of twilight worship), a brahmacārin who has conquered his senses—fasting and pure—by performing the Sandhyā rite attains the world of Brahmā (Brahmaloka).
This verse does not discuss Pralaya; it teaches the spiritual fruit (phala) of Sandhyā worship performed with brahmacarya, fasting, and purity—namely attainment of Brahmaloka.
Although framed for a brahmacārī, the ethical core—sense-restraint, cleanliness, and regular Sandhyā practice—functions as a dharmic standard that rulers and householders are also encouraged to uphold for merit and self-discipline.
The ritual focus is Sandhyā (twilight worship), performed at a specific sacred locus (Sandhyāvaṭa), highlighting place-based ritual merit (tīrtha-mahātmya) rather than temple architecture rules.