Marriage is a special and life-long bonding between a man and a woman. To ensure a happy and contented married life, our ancient system of horoscope matching offers great help in studying the compatibility between the boy and the girl contemplating for marriage. In this system, the horoscopes or birth charts of the boy and the girl are drawn based on their birth stars and moon signs to analyze the compatibility of their natal charts for a happy married life. For this reason, our ancient sages have penned down twenty Kootas or Poruthams (compatibility factors) to be studied during horoscope matching, of which only ten Poruthams are considered more important in present day. In some parts of India, only eight Kootas are considered for marriage. The twenty seven nakshatras or birth stars are arranged in an oval shape in the sky which constitutes the zodiac system. The zodiac transits around the nine planets, thus influencing the nature, life events and physical and mental attributes of individuals on Earth. Hence, it is very important to analyze the compatibility factors (Poruthams) of both the boy and the girl deciding to enter into married life.
Rajju Porutham is the sixth of the ten important Poruthams considered, during analyzing the birth charts of the couple for marriage unison. Rajju is a very significant Porutham,as it denotes longevity of the boy in the married life. For lasting happiness in marriage and a lovable relationship with his wife, long life of the husband is very important. This is predicted using Rajju Porutham. In Rajju Porutham, the birth stars of the boy and the girl are formed into groups, each denoting a body part. The stars Chitra, Mrigashira and Dhanishta represent head (siro rajju). The stars Arudra, Rohini, Swati, Hasta, Shravana and Shatabisha represent the neck (kanta rajju). The middle portion of the body is denoted by the stars Krittika, Uttara Phalguni, Punarvasu, Vishaka, Purva Bhadrapada and Uttarashada (nabhi rajju). The stars Pushya, Bharani, Purva Phalguni, Anuradha, Uttara Bhadrapada and Purvashada denote the thigh (kati rajju). The foot is represented by the stars Ashwini, Aslesha, Magha, Mula, Jyeshtha and Revati (pada rajju). If the stars of both the boy and girl denote the same body part, then the stars are complete incompatible with each other. If their stars represent head, there are chances of early death of husband; if they denote neck, the wife may die earlier; if they represent the middle portion, then the children may die early; if they are signify thigh, then they may face extreme poverty; if they denote foot, then they may suffer from pathetic wandering. Therefore, Rajju is a very important Porutham for a happy and successful married life.