Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
आदौ संपूर्णफलदं मध्ये मध्यफलप्रदम् ।अंते तुच्छफले लग्ने सर्वस्मिन्नेवमेव हि ॥ ३०५ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 305.
In every lagna (rising sign), the start gives full results. The middle gives middle results. The end gives small results.
Simple meaning: A rising sign gives full results at its start and small ones at its end.
सर्वत्र प्रथमं लग्नं कर्तुश्चंद्रबलं ततः ।
First check the rising sign, then the doer's Moon. A strong Moon makes the planets strong.
चंद्रस्य वलिमाधारमाधेय चान्यखेटकम् ।
The Moon's strength holds up the other planets.
चेदिंदुः शुभदः सर्वे ग्रहाः शुभफलप्रदाः ।
If the Moon is good, all planets give good. If bad, they give bad.