Jataka Tattva · by Mahadeva
Chapter 17 · Planet Periods
दशातत्वम्
मित्रोच्चात्मस्वत्रिकोणवर्गोत्तमस्ववर्गगस्य शुभा ।
Say a planet is in a friend's sign. Or say it is in its uchcha (high point) or its own sign. Or say it is in its mulatrikona (a planet's strong own-sign part) sign. Or say it is vargottama (same sign in the chart and its navamsha). Or say it is in its own varga (division of a sign). Its dasha (planet period) is good.
अस्तारिनीचभांशगस्य कष्टा ।
Say a planet is combust (too close to the Sun). Or say it is in an enemy's sign and navamsha (one-ninth part of a sign). Or say it is in the sign…
अवरोहिण्यधमा चेत् कष्टा ।
If a descending dasha (planet period) is also of the lowest kind, it is hard.
आरोहिणी मध्या चेत् सम्पूर्णा ।
If an ascending dasha (planet period) is of the middling kind, it becomes full.