एतत् पृष्ठम् अपरिष्कृतम् अस्ति
106 BRHAMASPHUTȚASIDDHANTA'S (712 A.D.) and the new conquerers learnt Indian astronomy and mathematics from these works as has been observed by Sachau. Alberuni who came to India early in the 11th century of the Christian era, learnt Indian astronomy chiefly by studying the Khandakhadyaka and the Brhat Samhita of Varahamihira, and both of them with the help of commentary of Bhattotpala. Reference KHANDAKHADYAKA P.C. Sengupta: The Khandakhadyaka, 1934.