Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 8 · Marriage
विवाहः
चंद्रार्केज्यादयः पच यस्य राशेस्तु खेचराः ।इष्टास्तच्छुभदं लग्नं चत्वारोऽपि बलान्विताः ॥ १३३ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 433.
Take a sign where five planets are favourable, beginning with the Moon, Sun and Jupiter. That lagna (rising sign) gives good results. It does so even if only four are strong.
Simple meaning: A lagna is good when the Moon, Sun, Jupiter and the others help it.
जामित्रशुद्ध्यैकविंशन्महादोषविवर्जितम् ।
Pick a lagna free of 21 great faults and with a pure 7th house.
वक्ष्यंतेऽत्र समासेन शृणु नारद सांप्रतम् ।
Now the 21 faults are told. The first is an impure almanac.
उदयास्तशुद्धिर्हानिर्द्वितीयः सूर्यसंक्रमः ।
More faults: rising and setting, the Sun's sign change, bad divisions, Venus in the 6th, Mars in the 8th.