Varaha Mihira in his Horasastra, i.e. Brhat Jataka, stated briefly the essence of the teachings of the learned sages viz. ten divisions of the Zodiacal Sign, Raja Yogas, longevity, effects of planetary periods etc. This could not be done elaborately by him and hence I am conveying in this work such useful essence, as called out from Yavanas etc., rejecting other un-useful portions, which may be appended to the said Brihat Jataka.

मुनियों द्वारा विस्तार पूर्वक लिखे गये प्रचीन ग्रन्थों को छोड़ कर वराह मिहिर ने संक्षेप में होरातन्त्र की रचना की है