Narada Purana — Purva Bhaga, Shloka 143
Graha–Ketu–Utpāta Lakṣaṇas: Solar/Lunar Omens, Comets, Eclipses, and Calendar Rules
अर्कभौमदिने षष्ठ्यां नाभ्यंगो वैधृतौ तथा । यः करोति दशम्यां च स्नानमामलकैर्नरः ॥ १४३ ॥
arkabhaumadine ṣaṣṭhyāṃ nābhyaṃgo vaidhṛtau tathā | yaḥ karoti daśamyāṃ ca snānamāmalakairnaraḥ || 143 ||
当第六月日（Ṣaṣṭhī）恰逢星期日或星期二时，以及在不祥的Vaidhṛti瑜伽之时，不应行涂油按摩。然若有人在第十月日（Daśamī）以余甘子（āmalaka）沐浴，即是遵行所规定的净浴之法。
Sanatkumara (teaching Narada in the Moksha-Dharma section)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
FAQs
It links inner purity with correct timing: certain tithi–weekday/yoga combinations are treated as ritually unsuitable for indulgent acts like oil-massage, while Daśamī bathing with āmalaka is upheld as a purifying observance that supports dharmic discipline.
Bhakti is supported through niyama (regulated conduct). By observing timing-based restraints and performing purificatory baths, a devotee maintains sāttvika cleanliness and readiness for worship—practical supports for steady devotion.
Jyotiṣa (Vedic astrology): it uses tithi (Ṣaṣṭhī, Daśamī), weekday lords (Sun/Mars), and yoga (Vaidhṛti) to prescribe what actions to avoid or perform for ritual correctness.