Each of the 9 planets is governed by an overlord and the compatibility between these overlords is important in ascertaining the success of marriage. When the overlords are friendly, the relationship between the bride and groom is also said to be smooth and compatible. Also, this porutham is a yardstick to assess the progeny factors of the couple. The following table describes the relationship that prevails between the planets:

Planet Friend Enemy Neutral
Sun Moon, Mars, Jupiter Saturn, Venus Rahu, Kethu Mercury
Moon Sun, Mercury Rahu, Kethu Mars, Jupiter Venus, Saturn
Mars Sun, Moon, Jupiter Mercury, Rahu, Kethu Venus and Saturn
Mercury Sun, Venus Moon Mars, Jupiter Saturn, Rahu Kethu
Jupiter Sun, Moon, Mars Mercury, Venus Saturn, Rahu Kethu
Venus Mercury, Saturn Rahu, Kethu Sun, Moon Mars, Jupiter
Saturn Venus, Mercury, Rahu, Kethu Sun, Moon, Mars Jupiter