Skanda Purana — Kashi Khanda, Shloka 48
काश्यां सर्वाणि तीर्थानि एकैकादुत्तरोत्तरम् । महैनांसि प्रहंत्येव प्रसह्य निज तेजसा
kāśyāṃ sarvāṇi tīrthāni ekaikāduttarottaram | mahaināṃsi prahaṃtyeva prasahya nija tejasā
在迦尸（Kāśī），一切圣渡处（tīrtha）层层超胜，确能以自身本具的灵耀之力，强而有力地摧灭乃至重罪。
Skanda
Tirtha: Kāśī’s collective tīrthas (sarva-tīrtha-sanniveśa)
Type: kshetra
Listener: muni (sage)
Scene: A sweeping vision of Kāśī’s many tīrthas along the Gaṅgā, each radiating stronger light than the last, with dark ‘sin’ forms dissolving in their brilliance.
FAQs
Kāśī’s tīrthas are portrayed as inherently potent: their sanctity itself burns away sin without obstruction.
Kāśī’s collective tīrthas (the network of holy bathing places within Vārāṇasī).
Implied practice is tīrtha-sevā such as bathing/approaching Kāśī tīrthas for pāpa-kṣaya, though not spelled out as a rule here.