Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v1.c5.97

v1.c5.97

The *Horā* branch originally represented the study of the ascendant of birth in one’s horoscope, and the prediction of all the happy and sorrowful events of life; but afterwards it was divided into two parts, the above mentioned part being one of them. In the beginning, the complete *Horā* section was known as *Jātaka*, but later on this particular part relating to the ascendant came to be known as *Jātaka* and the second part as *Tājik*. The principal subject of *Tājik* generally is the study of events, good or evil, in any individual life, from the ascendant of the annual horoscope which is cast for the moment of his entry into any new year of his age reckoned on solar basis. Under this system of horoscope reading, the radical ascendant is regarded as a planet and is known by the name *Muthahā* (Munthā?). Some authors have coined the Sanskrit term *Tārtiyaka* for *Tājik*. This part of *Horā*, viz., *Tājik* came into vogue from about Śaka 1200, that is by about the time of increasing Muslim domination in our country.