ब्राह्मस्फुटसिद्धान्त (ब्रह्मगुप्त - शून्य, कुट्टक, बीजगणित एवं सम्पूर्ण २१ अध्याय सान्वय सटीक)

106 BRHĀMASPHUṬASIDDHĀNTA'S KHAṆḌAKHĀDYAKA
(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 centuty of the
Christian era, learnt Indian astronomy chiefly by studying the
Khaṇḍakhādyaka and the Bṛhat-Saṁhitā of Varāhamihira, and
both of them with the help of commentary of Bhaṭṭotpala.
—:c:—
Reference
P.C. Sengupta : The Khaṇḍakhādyaka, 1934.