Shasha yoga is caused by Shani (Saturn) occupying a kendra, in own or exaltation rashi.
Brihat Parashara Hora Shashtra chapter 75 Panch Mahapurush Yoga.
Sasa Yoga will bless the native with good health and moral conduct. The person with Sasa Yoga will own lands and buildings and will be a ruler, it bless the native with power and position.
It bless the native with name, fame and success, favor from the government, some natives under this benefic influence can also become heads of the states or top class ministers in government.
Strong influence of Shasha Yoga helps to become successful lawyers, judges, engineers, powerful political leaders, rich and famous real estate builders or dealers, successful and famous liquor businessmen and many other kinds of professionals.
Shasha means rabbit, native gets the intelligence and powers of rabbit due to the effects of this Yoga.
The etymology of Shasha Yoga
Saturn is strong and placed in the Cardinal house, similarly the presence of Saturn placed in three signs namely Capricorn, Mool Trikona sign; Aquarius and Libra. Within 1-10 degrees, along with when Saturn is present in 4th, 7th and 10th houses.
This one is last fifth among the Panch Mahapurush Yoga, whereas planetary affliction over Saturn will lead to less or negligible results of Sasa Yoga in a horoscope. On the other hand Saturn when in planetary association with functional benefic or Yogakaraka planet will lead to amplified results of Sasa Yoga.