Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
अमायां च नवम्यां च सप्तम्यां च कुलक्षयः ।या पौर्णिमा दिवा चंद्रमती सानुमती स्मृता ॥ १४५ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 145.
On the new moon, the 9th and the 7th, the family may suffer harm. The full moon that has the Moon by day is remembered as Anumati.
Simple meaning: This may harm the family on a new moon, 9th or 7th. A full moon with the Moon by day is Anumati.
रात्रौ चन्द्रवती राकाप्यमावास्या तथा द्विधा ।
A full moon at night is Raka. A new moon with a trace of Moon is Sinivali, without it Kuhu.
कार्तिके शुक्लनवमी त्वादिः कृतयुगस्य च ।
The Krita age begins on the bright 9th of Kartika, and the Treta age on the bright 3rd of Vaishakha.
कृष्णा पंचदशी माघे द्वापरादिमुदीरिता ।
The Dvapara age begins on the dark new moon of Magha, and a kalpa on the dark 13th of Nabhasya.