How Chandra-Maṅgala forms
| Condition | Requirement |
|---|---|
| The grahas | Moon and Mars |
| The contact | Conjunction in one sign, or mutual aspect between them |
| House | Not specified by the yoga — but it colours the result heavily |
| Strength | Both grahas' dignity matters; a debilitated Moon or Mars gives the yoga's difficulty without its benefit |
What it gives, and the part usually omitted
The promise is money-making capacity — a real facility for turning situations into income, and an instinct for opportunity that does not need to be taught.
The caution attached in the classical treatment concerns the manner. Mars is aggression and the Moon is the mind; their contact produces a mind that pursues gain directly and is not much restrained in doing so. The texts associate the combination with earnings from sources that are not always clean, and with a hardness in money matters that people close to the native tend to notice.
It is not a claim that everyone with this yoga is dishonest. It is a claim that the yoga supplies drive without supplying scruple, and that the scruple has to come from elsewhere in the chart — Jupiter's condition and the 9th house being the usual places to look.
How to read it in a real chart
Start with which of the two is stronger. A dignified Moon with a weak Mars gives the instinct without the force; a dignified Mars with a weak Moon gives force without judgement, which is the more difficult combination.
Then read the house. In the 2nd or 11th it is most directly a wealth yoga. In the 4th it tends toward property and a restless domestic life. In the 8th it produces gain through other people's money — inheritance, insurance, and the kinds of transaction where the caution above matters most.
And check whether the Moon is waning and close to the Sun. A dark Moon in contact with Mars gives the aggression with very little of the mind's steadiness behind it.
How this check works
Your chart is computed from an astronomical ephemeris on the Lahiri (Citrapakṣa) ayanāṁśa, and the formation rule stated on this page is tested against it directly — the same rule, not a paraphrase. Where the classical texts disagree about a condition, the page names the reading we follow.