Rule 4 cancels 20 points when Jupiter casts an aspect on Mars. It is the most widely cited neutraliser of Mangal Dosha in classical literature, and unlike the dignity rules it depends on the relationship between two planets rather than on Mars alone.
This page covers how rule 4 is evaluated, what it is worth, the cases where it interacts with other rules, and a worked example with the actual arithmetic.
How is rule 4 evaluated?
Jupiter casts full aspects to the 5th, 7th and 9th signs counted from its own position. Our engine evaluates these on a whole-sign basis: if Mars occupies the 5th, 7th or 9th sign from Jupiter, the aspect applies. No degree-based orb is used, because whole-sign aspects are the classical standard in this tradition and a degree orb would be our addition rather than the sources’.
Counting is inclusive in the classical manner — the sign Jupiter occupies is the 1st. So Jupiter in Aries aspects Leo (5th), Libra (7th) and Sagittarius (9th). Mars in any of those three signs receives the aspect.
Does Jupiter ruling Mars’s sign count?
No. Jupiter rules Sagittarius and Pisces, and Mars sitting in one of those signs is a different relationship entirely. Rule 4 requires an aspect — a positional relationship — not rulership. This is one of the most common misreadings of the rule.
Is the 7th aspect stronger than the 5th or 9th?
Classical practice sometimes ranks the 7th aspect highest for all planets. Our scoring treats all three as equivalent at 20 points, because the Dosha Bhanga tradition does not grade them separately for this purpose.
What does rule 4 do to a real score?
Mars in Libra in the 7th house from an Aries Ascendant, with Jupiter in Gemini.
Libra is the 5th sign from Gemini, so Jupiter aspects Mars. The 7th house base weight of 80 with an Ascendant trigger gives a raw 44.4. Rule 4 removes 20%, leaving a net 36 out of 100 — the Mild band.
Rule 4 combines freely with the dignity rules, since it is not absorbed by anything. Mars in Scorpio receiving a Jupiter aspect scores 25 plus 20, for 45% total cancellation.
What should you know before relying on this rule?
This rule is never absorbed. Unlike rules 1, 2, 3 and 7, it survives rule 8 intact, because an aspect from another planet is genuinely independent information about the chart rather than a restatement of Mars’s own placement.
That makes it one of the most useful rules to check. A chart with a named sign-house exception and a Jupiter aspect scores 35 plus 20, for 55% cancellation.
How does rule 4 compare with the other nine?
Rule 4 carries 20 of the 100 points available across the ten rules, and cancellation is capped at 85% in total — classical tradition treats a dosha as mitigated rather than erased, so no chart reaches zero.
The rules most worth reading alongside this one:
- Rule 5 — Jupiter conjunct — read the rule
- Rule 6 — Chandra-Mangal — read the rule
- Rule 8 — exceptions — read the rule
The complete ten-rule reference sets all of them out together with their weights and sources.
Frequently asked questions
What are Jupiter’s aspects? The 5th, 7th and 9th signs counted from Jupiter’s own position, counting inclusively.
Does Jupiter conjunct Mars count as an aspect? No — that is rule 5, a separate condition worth 15 points. Conjunction and aspect are scored independently.
Does Jupiter ruling the sign Mars occupies help? No. Rulership is not aspect. Mars in Sagittarius with Jupiter elsewhere gets nothing from rule 4.
Is a degree orb used? No. Whole-sign aspects are used, which is the classical standard here.
Can rule 4 combine with other rules? Yes, freely. It is never absorbed and stacks with every other rule up to the 85% cap.
Why is Jupiter’s aspect considered protective? Jupiter is the great benefic in classical practice, and benefic aspect on a malefic is a general neutralising principle rather than a Mangal Dosha specific one.
Where to go next
To see which of the ten rules actually fire on your chart rather than reading them in the abstract, run the cancellation calculator — it reports every rule tested, including those that did not apply and those that could not be evaluated. Our methodology documents how the weights are derived and where our scoring decisions depart from classical instruction.