Skanda Purana — Kashi Khanda, Shloka 76
भानुवारो यदा षष्ठ्यां सप्तम्यामथ जायते । तदा यत्सुकृतं कर्म कृतं तदिह भुज्यते
bhānuvāro yadā ṣaṣṭhyāṃ saptamyāmatha jāyate | tadā yatsukṛtaṃ karma kṛtaṃ tadiha bhujyate
主日が第六または第七の月日（ṣaṣṭhī／saptamī）に当たるとき、その時になされた善行は、この世においてその果報を味わうことができる。
Skanda
Tirtha: Kāśī-kṣetra (Ravi-vāra observance)
Type: kshetra
Scene: A Sunday ṣaṣṭhī/saptamī morning at Kāśī: devotees perform arghya to the rising sun, then distribute food and cloth; a sense of immediate blessing and wellbeing.
FAQs
Aligning worship with auspicious calendrical combinations makes dharma effective and swiftly fruitful.
Kāśī is the implied sacred setting of the Kāśīkhaṇḍa, where such observances become especially potent.
It recommends doing sukṛta (meritorious acts)—such as japa, dāna, and pūjā—on Sundays that coincide with ṣaṣṭhī or saptamī.