Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
पुत्रहानिर्भवेत्तस्य त्रयोदश्यां धनक्षयः ।अर्थपुत्रक्षयस्तस्य द्वितीयायां न संशयः ॥ १४४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 144.
... there may be grief over a son. On the 13th, wealth may be lost. On the 2nd, both wealth and sons may suffer.
Simple meaning: Amla bathing on the 10th risks grief over a son; the 13th, wealth; the 2nd, both.
अमायां च नवम्यां च सप्तम्यां च कुलक्षयः ।
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.