[Pramāṇa](https://indike.org/pramana/) › People › Muhammad b. Musa al-Khwarizmi # Muhammad b. Musa al-Khwarizmi (Muḥammad b. Mūsā al-Khwārizmī) Mathematician and astronomer of the Bayt al-Ḥikma; wrote on Indian reckoning and an abridged Sindhind zīj. ## Works (4) - [زيج السند هند](https://indike.org/pramana/inf.isl.ar.hisab.zij-al-sindhind-khwarizmi) — Arabic; 820–840 CE; lost - [كتاب الجمع والتفريق بحساب الهند](https://indike.org/pramana/inf.isl.ar.hisab.hisab-al-hind-khwarizmi) — Arabic; 820–850 CE; lost - [Ezich Elkauresmi (Zij al-Sindhind)](https://indike.org/pramana/inf.la.medieval.science.ezich-elkauresmi) — Latin; 1126 CE; catalogued, text not yet digitised - [Al-Khwārizmī on the Indian Numbers (Latin) (Dixit Algorizmi (Algoritmi de numero Indorum))](https://indike.org/pramana/inf.la.medieval.numerals.dixit-algorizmi) — Latin; 1135 CE; catalogued, text not yet digitised --- Source: [https://indike.org/pramana/person/khwarizmi](https://indike.org/pramana/person/khwarizmi) · Pramāṇa