SHANI (SATURN) YANTRA
Saturn, Sani also known as Manda means slow. It also means to be full of forgiveness, tolerance and peace as in “shankara”, “shanno danti prachodayat”. Saturn indicates the solitaire life and spirituality. He signifies cold diseases, hard work, public office, political success and chronocity of any disease. Saturn is a karaka of anything slow - be it a disease, a long stay in the office. A well posited sani gives excellent longevity. Similarly, Sani would cause delay in the aspects of life he is associated. Sani is in-charge for bones and quality of blood. Adverse sani would cause fractures, dental problems and anemia. Remedial measures to sani will mainly reduce the delays, cure from cold and bone disorders and also reduce the adverse effects sani caused by his position, ownership and association in the chart.
Saturn is the son of Sun god and Chaya (Sanvarna). He is considered as a cruel planet. The cruelty, which he possesses in his sight, is due to the curse he received from his wife. According to the astrology if the Saturn pierces and passes through the constellation of Rohini then it is considered to be very inauspicious and causes draughts for twelve years making even the survival of the living beings impossible.
Shani Yantra/ Saturn Yantra is used to propitiate an afflicted Shani/Saturn and achieve Rajayoga through complete blessings of Shani. When Saturn is malefic in a horoscope, in transit or causes Sadesati, use of Shani yantra is very beneficial. Shani yantra is useful, when one feels depressed. It indicates success in worldly affairs, success in business and the man touches the dizzy heights. Shani yantra is kept on rising moon Saturday during venus or Saturn Hora.
Mantra in English:
Stotra : Nilanjana-samabhasam ravi-putram yamagrajam chaya-martanda-sambhutam tam namami shaishcharam
When translated in English, it means:
"I bow down to slow-moving Saturn, whose complexion is dark blue like nilanjana ointment. The elder brother of Lord Yamaraj, he is born from the Sun god and his wife Chaya."