If Nardir/ic is the root of a person, Jupiter indicates a strong base, intuitive nature and unless influenced my challenging aspects, a source of inner confidence. “Deep inside, they understand the forest. They can see how people work, how life functions etc…This doesn’t mean they are necessarily skilled at relating to all different kinds of people. Jupiter on the ic doesn’t give a person awareness of the trees, just the forest.”
Jupiter as it has to do with higher wisdom, when on the ic symbolizes a function in a person’s psyche that intuitively knows how things work… not in a mechanical Virgo sense, or a social Gemini sense, but archetypically/macro-microcosmic awareness- looking at the world and feeling inside “ok that just makes sense”.
Discussion on Jupiter on Nadir:
The Astrologer’s Handbook (Sakoian & Acker) suggests Jupiter cnj IC might lead the native into the real-estate or home construction/improvement business. Also good for farming food crops. Might have large homes or families, good parental relationships, and, “In the last part of their lives natives are prosperous, comfortable, even opulent.” Would one of you like to marry me later on?
Jupiter (good fortune) at the IC could show luck and happiness through many different things like a stable/loving family, a well-to-do family, or, in general, the benefits the native will draw from his family. Jupiter (expansion) at the IC could also show a big house, or a large family, or grandeur of some sort at the place of stay. Jupiter (higher learning/religion, also things foreign) could also indicate foreign connections to or within the family, family travelling abroad quite a bit, or having foreign visitors often at home, and/or a well-cultured, well-read family; or simply that the native is satisfied at his place of stay/within his family. So, Sun Dance, there really is no single definition for this. Jupiter (bigger benefic), though anywhere in the chart is good, it is especially well-placed in one of the cardinal houses (as these are directly connected to the native, and where action happens), in the eleventh (its house of joy), and then in the ninth (its own house-Sag).