Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
स्थिरेष्वदितिसार्पांत्यपितृमारुतभेषु च ।न कुर्याद्रोगमुक्तस्य स्नानमाहींदुशुक्रयोः ॥ १८९ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 189.
Someone freed from illness should not take the bath in the fixed stars. Nor in Aditi's star, the snake star, the last star, the Pitri (ancestors) star or Maruta's star. Nor on the day of the Moon or Venus.
Simple meaning: After an illness, avoid the recovery bath in these stars and on Monday or Friday.
Classical view, not medical advice.
उत्तरात्रयमैत्रेन्द्रवसुवारुणभेषु च ।
Starting dance is good in the Uttaras, Anuradha, Jyeshtha, Dhanishta, Shatabhisha, Pushya, Hasta and Revati.
पूर्वार्द्धयुंजि षङ्भानि पौष्णभादुदभात्ततः ।
The 27 stars fall in three groups of six, twelve and nine.
परार्द्धयुंजि क्रमशः संप्रीतिर्दम्पतेर्मिथः ।
The three star groups show how husband and wife love each other. Six stars are short.