Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 8 · Marriage
विवाहः
मंगलेषु त्यजेत्खेटैर्विद्धं च क्रूरसंयुतम् ।अखिलर्क्षं पंचगव्यं सुराबिंदुयुतं यथा ॥ ४७३ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 473.
In good acts avoid a star that is pierced by planets or joined with bad planets. A whole star like that is like the five cow products with a drop of liquor in them.
Simple meaning: Avoid a star that is pierced or joined by bad planets. It is like pure food spoiled by one drop of liquor.
पाद एव शुभैर्विद्धमशुभं नैव कृत्स्नभम् ।
A star pierced by good planets is spoiled only in one quarter. One hit by cruel planets is not good at all.
तुलामिथुनकन्यांशा धनुरंत्यार्द्धसंयुताः ।
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.