Prototypes of modern numerals were being used in India as early as the third century B.C.E. Hindu scholars later transmitted their mathematical knowledge to the court of Caliph al - Mansur in Baghdad.
كما توصي الشريعة الاسلامية ان يُدفَن الميت ووجهه صوب القبلة ،‏ وأن توجَّه الحيوانات بهذا الاتجاه ايضا عند الذبح .‏