Yogi, Avayogi and Duplicate Yogi (Sahayogi) concepts have tertiary importance in Astrology. Basically, Yogi planet cast a light on:
- Fortune
- Prosperity
- Growth
- Materialistic happiness etc
or you can say all good things. Hence yogi planet acts like a functional benefic.
Duplicate yogi (Sahayogi planet), compliments or have the capability of enhancing or giving a catalyzing effect to the result given by yogi planet, therefore again signify good things.
Avayogi planet is a functional malefic planet which can take away what yogi planet can give. The point here which is to be noted is the results of the Avayogi planet must be analyzed in reference to the results of yogi planet. In short, if the yogi planet do not have the power to give a particular result then Avayogi planet also cannot take it. In contrast to these basic assumptions, If yogi planet is weak or afflicted in the chart after considering all shad Bal and non shad Bal factors, then even yogi planet can give you bad results and if avayogi planet is strong or non afflicted in the chart after considering all shad Bal and non shad Bal factors, then even Ava yogi planet can give you good results from materialistic angle. This is the reason why your friend Nikhil initially mentioned that these concepts have tertiary importance in Astrology