Guru or Jupiter is the ruler of the Ascendant or the first house and the 4th house for Sagittarius natives or Dhanus Rasi people. During October 2018, Jupiter or Guru transits from your 11th house of Libra to your 12th house of Scorpio. And the 12th house rules over expenditure of the native.Hence this transit of Jupiter to your 12th house is not much favorable.
Natives would face unwanted stress and strain in their lives. Property disputes arise. Buying or selling of landed property would meet with impediments. Financial losses loom around, hence be cautious of your moves. Wise planning and thrift would help you tide over these difficult times.The 4th house rules over domestic welfare/happiness and this area would be widely affected thanks to the Jupiter transit.
There would be quarrels and misunderstandings with family and friends. Talk over your personal conflicts for the season.This Guru Peyarchi might create mental worries and anxieties for Dhanus Rasi natives. Those pursuing academics or research would meet with hindrances. Health issues haunt you and enemies likely to bother you. A sense of unrest and uneasy calm would prevail in the lives of the natives. However overseas travel would bring happiness and gains for the natives during this transit of Jupiter.
Guru Peyarchi Palangal for 12 Rasis or Effects of Jupiter transit on the 12 Moon signs