Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 8 · Marriage
विवाहः
तुलामिथुनकन्यांशा धनुरंत्यार्द्धसंयुताः ।एते नवांशाः शुभदा वृषभस्यांशकाः खलु ॥ ४७५ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 475.
The navamshas (one-ninth part of a sign) of Libra, Gemini and Virgo give good results. So do those of the last half of Sagittarius. So do the navamshas of Taurus.
Simple meaning: Navamshas of Libra, Gemini, Virgo, Taurus and the last half of Sagittarius give good results.
अंत्यांशास्तेपि शुभदा यदि वर्गोत्तमाह्वयाः ।
Last navamshas are good only if the same sign shows in the chart and navamsha. Others are bad.
कुनवांशकलग्नं यत्त्याज्यं सर्वगुणान्वितम् ।
Avoid a lagna in a bad navamsha, and avoid a day with a great fall-point fault.
अपि सर्वगुणोपेतं दम्पत्योर्मृत्युदं यतः ।
Such a day may put the couple's life at risk. Lightning, mist and rain are small faults.