Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 8 · Marriage
विवाहः
अपि सर्वगुणोपेतं दंपत्योर्निधनप्रदम् ।शशांके ग्रहसंयुक्ते दोषः संग्रहसंज्ञकः ॥ ४५४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 454.
Even with all good points, it may put the couple's life at risk. When the Moon is joined by a planet, the fault is called Samgraha.
Simple meaning: It may put the couple's life at risk. The Moon joined by any planet is the Samgraha fault.
तस्मिन्संग्रहदोषे तु विवाहं नैव कारयेत् ।
Do not marry in the Samgraha fault. The Sun with the Moon may bring poverty.
कुजेन मरणं व्याधिः सौम्येन त्वनपत्यता ।
The Moon with Mars may risk life or bring illness, Mercury may deny children, Jupiter bad luck, Venus a co-wife.
प्रव्रज्या सूर्यपुत्रेण राहुणा मूलसंक्षयः ।
The Moon with Saturn may bring renunciation, with Rahu loss at the root, with Ketu lasting hardship.