Kaal Sarp Dosh Puja is essentially a fault because Rahu is associated with the Sun, Moon, and Guru. Rahu is the "Kaal" ruler, and Ketu is the "Snake" overlord. It is referred to as "Kalsarp" Dosh if all the planets in the horoscope are on one side between these two planets. Along with Sun and Moon, Rahu and Ketu constantly go backward. It is said in the tenth verse of the fourth chapter of the Manasagri Grant that when a snakebite occurs, Saturn, Sun, and Rahu are in the seventh spot in the Lagna.