Ascendant is rising continuously, moment after moment, on geocentric eastern horizon at advanced longitude (degree-minute-second) . This is called Cuspal longitude of ascendant where certain sign, star, sub and sub-sub rise. With respect to ascendant Cuspal longitude, other houses and Cuspal positions form. Cuspal position is co-ruled by the sign lord, star lord, sub lord and sub-sub lord.
In Cuspal Interlinks Astrology, sub-sub arc is practically ultimate division and Cuspal sub-sub lord is the agent who interacts with other Cusps and Bhava. The interaction or inter-relationship of Cuspal sub-sub lords with other Cusps/ Bhava is termed as Cuspal Interlinks. In Cuspal Interlinks Theory Mr. S.P. Khullar has uniquely described all about the interaction and interlinks or inter-relationship of Cuspal sub-sub lords.
Every sub-sub lord establishes relation with other cusps and Bhavas in a definite way. A Cuspal sub-sub lord (i.e. a planet) establishes relationship with other cusp on the basis of its Stellar Status and Positional Status. Nature of such established relation of Cuspal sub-sub lord and cusp is further specified and modified by the sub lord of the Cuspal sub-sub lord. That Cuspal sub-sub lord is meaningfully related with that cusp or not; it is revealed the sub-sub lord of the Cuspal sub-sub lord.
In other words, In Cuspal Interlinks Matrix, a planet relates with others cusp or becomes significator of that cusp(s) where Nakshatra Lord of a planet or planet itself (in case of PS) appears in the Cuspal position. It is termed as the planet involved the cusp through its star lord. Likewise, wherever sub lord of the planet appears in Cuspal position, it understood that the planet committed to the cusp through sub lord. If this committed cusp is in favourable position with respect to involved cusp then we say that the planet is fruitful significator of the involved cusp (where planet’s star lord has appeared). The Sub Sub Lord of Sub Sub Lord of planet will declare the culmination of the involvement and commitment of the planet. That is, Sub Sub Lord of Cuspal Sub Sub Lord is a planet that gives hint of fruitfulness of the significationship of the planet for involved cusp(s). Clearly, a planet becomes significator and gives result of only those cusp(s)/ Bhava where star lord of the planet or planet itself appears. It becomes fruitful significator of those cusps if the planet is favourably com mitted.