Saturn is Yogakarka in Libra and Taurus, who signs owned by Venus. Saturn in Mooltrikona sign means that it is in Aquarius. Assuming that Saturn is unafflicted then Saturn will give best results during its Mahadasha and also during the antardasha. Saturn will also give good results during the antardasha of Saturn and Mahadasha of friendly planet.
Blessings,
Navneet Khanna
Astrologer