All 10 poruthams of Tamil thirumana porutham explained — what each checks, which are deal-breakers, how many should match, and how they are counted.
Thirumana porutham is the Tamil system of matching horoscopes for marriage using ten checks — Dina, Gana, Mahendra, Sthree Deergha, Yoni, Rasi, Rasi Adhipathi, Vasya, Rajju and Vedha — counted from the bride's birth Nakshatra to the groom's. Tradition asks for at least 5–6 poruthams to agree, with Rajju and Vedha treated as compulsory.
Thirumana porutham (marriage agreement) is the Tamil method of comparing a bride's and groom's horoscopes before fixing a marriage. Nearly every check works from just two facts in each chart: the birth Nakshatra (star) and the Rashi (Moon sign). The astrologer counts from the bride's Nakshatra to the groom's, applies each porutham's rule in turn, and records which of the ten agree.
Date, time and place of birth give each person's Nakshatra and Rashi. Without an accurate birth time the paadam (quarter) can shift, so families verify the horoscope carefully first.
Tamil tradition always starts the count from the bride's Nakshatra. Most poruthams — Dina, Mahendra, Sthree Deergha — are decided by this count.
Each porutham either agrees (uthamam or madhyamam) or does not (adhamam). The tally, together with the compulsory checks, gives the verdict.
This article walks through all ten. For how the poruthams combine into a single horoscope compatibility score out of 10, see our scoring methodology guide.
| Porutham | What it checks | Life area | Importance |
|---|---|---|---|
| Dina | Count from bride's to groom's Nakshatra, divided by 9 | Health and daily well-being | High |
| Gana | Temperament class of each star (Deva, Manushya, Rakshasa) | Behavioural harmony | High |
| Mahendra | Groom's star at favourable counts (4, 7, 10, 13, 16, 19, 22, 25) from the bride's | Progeny and family line | Medium |
| Sthree Deergha | Groom's star sufficiently far from the bride's (beyond 13) | Bride's prosperity and security | Medium |
| Yoni | Animal symbols of the two stars — friendly, neutral or enemy | Physical and temperamental compatibility | High |
| Rasi | Position of the groom's Moon sign counted from the bride's | Growth of family and wealth | High |
| Rasi Adhipathi | Friendship between the lords of the two Rashis | Mutual affection and understanding | Medium |
| Vasya | Natural attraction between the two Rashis | Mutual devotion | Medium |
| Rajju | Both stars must not fall in the same body-part group | Longevity of the spouse | Compulsory |
| Vedha | The two stars must not be a mutually afflicting pair | Freedom from obstruction | Compulsory |
Dina porutham is counted from the bride's Nakshatra to the groom's and the count is divided by 9; certain remainders are favourable. It stands for the couple's health and freedom from daily friction — our Dina porutham guide covers the exact favourable remainders.
Gana porutham sorts the 27 Nakshatras into three temperament classes: Deva (gentle), Manushya (balanced) and Rakshasa (assertive). Same-class matches agree best; Deva–Manushya is acceptable; a Rakshasa star paired with a Deva star is the classical mismatch, signalling clashing temperaments.
Yoni porutham assigns each Nakshatra an animal symbol and compares the pair as friendly, neutral or enemy. It traditionally stands for physical and instinctive compatibility — the full animal table is in our Yoni porutham guide.
Rasi porutham counts the groom's Moon sign from the bride's; counts beyond six are traditionally favourable, standing for the growth of family and wealth. Rasi Adhipathi porutham then asks whether the planetary lords of the two Rashis are friends — friendly lords indicate mutual understanding, enemy lords the opposite.
Mahendra porutham is present when the groom's star falls at the counts 4, 7, 10, 13, 16, 19, 22 or 25 from the bride's, and stands for progeny and the continuation of the family line. Sthree Deergha asks that the groom's star be sufficiently far from the bride's — classically beyond 13 — signifying the bride's long-term prosperity and security. Vasya porutham checks whether the two Rashis fall in each other's classical lists of naturally drawn signs, standing for mutual devotion.
Not all ten carry equal weight. Tamil tradition draws a clear line between compulsory checks and flexible ones:
Alongside the poruthams, astrologers also check each chart individually for doshams — Chevvai dosham in particular — since a dosham in one chart is conventionally balanced by the same dosham in the other.
The traditional answer: at least 5–6 of the 10 poruthams should agree, and Rajju and Vedha must both pass. Eight or more agreements is considered an excellent match (uthamam), 5–7 a good or acceptable match (madhyamam), and fewer than 5 — or any failure of a compulsory check — a weak match (adhamam) calling for the family astrologer's judgement on the specific charts.
Checking all of this by hand takes an experienced astrologer and both horoscopes side by side. On MatrimonyTrust it happens automatically: when both profiles carry birth details, the platform computes all ten poruthams from both birth charts and shows a horoscope compatibility score out of 10 — labelled Excellent, Good, Average or Low — on every profile, with the porutham-by-porutham breakdown and dosham flags available. Families who do not follow horoscope matching can opt out entirely, and browsing is free.
Tradition asks for at least 5–6 of the 10 poruthams to agree, provided Rajju and Vedha both pass. Eight or more agreements is considered an excellent match, 5–7 acceptable, and fewer than 5 weak. A failure of Rajju or Vedha outweighs a high tally, so families confirm those two before counting the rest.
Fix both birth Nakshatras and Rashis from the horoscopes, then count from the bride's star to the groom's. Each of the ten poruthams applies its own rule to that count or to the two stars' properties — temperament class, animal symbol, Rashi lords. Tally the agreements, confirm Rajju and Vedha pass, and judge the match by the overall pattern.
Rajju porutham is treated as the single most important check in the Tamil system because it concerns the longevity of the spouse — a same-Rajju match is conventionally rejected outright. Vedha is the second compulsory check. Among the remaining eight, Dina, Gana, Yoni and Rasi carry the highest traditional weight.
Four agreements is below the traditional threshold of 5–6, so classical practice treats it as a weak match. However, astrologers weigh which poruthams agree, not just how many — four agreements that include the high-weight checks with Rajju and Vedha passing reads very differently from four flexible agreements. Families in this situation usually take the full charts to their astrologer.
Date of birth alone is not enough — the birth time and place are needed to fix the Nakshatra, its paadam and the Rashi accurately, since the Moon changes star roughly daily and a birth near the boundary can shift the result. With full birth details, all ten poruthams can be computed exactly, which is how automated matching on platforms like MatrimonyTrust works.
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