Skanda Purana — Mahesvara Khanda, Shloka 19
ततो गायत्रिपूतं यद्द्विजास्तोयं क्षिपंति च । तेन दह्यंति ते पापाः संध्योपासनतः सदा
tato gāyatripūtaṃ yaddvijāstoyaṃ kṣipaṃti ca | tena dahyaṃti te pāpāḥ saṃdhyopāsanataḥ sadā
ثم إن الماء الذي يقذفه ذوو الولادتين—وقد طُهِّر بترتيلة الغاياتري—يحرق أولئك الآثمين؛ وهكذا، بمواظبة عبادة السَّندْهيا عند الشفق، يظلون محترقين على الدوام.
Lomaharṣaṇa (Sūta) to the sages (deduced)
Scene: A twice-born worshipper at riverbank at twilight, holding kuśa and water-vessel, offering arghya; the water, luminous with Gāyatrī, becomes a fiery stream that scorches embodied sins depicted as dark shadow-forms retreating.
FAQs
Daily discipline (sandhyā) empowered by mantra (Gāyatrī) is depicted as a real spiritual force that destroys inner and outer negativity.
No particular site is named; the merit is tied to the universal rite of sandhyā and arghya.
Offering/casting water sanctified by Gāyatrī during sandhyā (arghya), as part of regular twilight worship.