Abū Rayḥān al-Bīrūnī
Abū al-Rayḥān Muḥammad ibn Aḥmad al-Bīrūnī'[n 1] (born 5 September 973 in Kath, Khwarezm, died in the year 13 December 1048 in Ghazni), known as Alberonius in Latin and Al-Biruni in English, was a Persian-Chorasmian Muslim scholar and polymath of the 11th century.
Al-Biruni was one of the greatest scholars of the medieval Islamic era and was well versed in physics, mathematics, astronomy, and natural sciences. He did a lot of work as a historian, chronologist and linguist.
- Arabic spelling. Persian: Abū Rayḥān Muḥammad ebn Aḥmad Bērūnī (ابوریحان محمد بن احمد بیرونی). The intermediate form Abū Rayḥān al-Bīrūnī is often used in academic literature.
- Encyclopædia Britannica, al-Biruni (Persian scholar and scientist) - Britannica Online Encyclopedia, Britannica.com, retrieved 2010-02-28
- Al-Biruni Commemoration Volume, (Calcutta, 1951)
- Bosworth, C. E. (1968), “The Political and Dynastic History of the Iranian World (A.D. 1000–1217)”, J.A. Boyle (ed.), Cambridge History of Iran, vol. 5: The Saljuq and Mongol Periods, Cambridge University Press: 1-202. . Excerpt from page 7:"The Iranian scholar al-BIruni says that the Khwarazmian era began when the region was first settled and cultivated, this date being placed in the early 13th-century BC) "
- Richard Frye: "The contribution of Iranians to Islamic mathematics is overwhelming. ..The name of Abu Raihan Al-Biruni, from Khwarazm, must be mentioned since he was one of the greatest scientists in World History"(R.N. Frye, "The Golden age of Persia", 2000, Phoenix Press. pg 162)
- M. A. Saleem Khan, "Al-Biruni's discovery of India: an interpretative study", iAcademicBooks, 2001. pg 11: "It is generally accepted that he was Persian by origin, and spoke the Khwarizmian dialect" 
- Rahman, H. U. (1995). A Chronology of Islamic History : 570 - 1000 CE. London: Mansell Publishing. p. 167. ISBN 1-897940-32-7.
A Persian by birth, Biruni produced his writings in Arabic, though he knew, besides Persian, no less than four other languages
- Biruni (2007). Encyclopædia Britannica. Retrieved 22 April 2007;
- David C. Lindberg, Science in the Middle Ages, University of Chicago Press, p. 18:
"A Persian by birth, a rationalist in disposition, this contemporary of Avicenna and Alhazen not only studied history, philosophy, and geography in depth, but wrote one of the most comprehensive Muslim astronomical treatises, the Qanun Al-Masu'di."
- L. Massignon, "Al-Biruni et la valuer internationale de la science arabe" in Al-Biruni Commemoration Volume, (Calcutta, 1951). pp 217-219.
“ In a celebrated preface to the book of Drugs, Biruni says: And if it is true that in all nations one likes to adorn oneself by using the language to which one has remained loyal, having become accustomed to using it with friends and companions according to need, I must judge for myself that in my native Khwarezmian, science has as much as chance of becoming perpetuated as a camel has of facing Kaaba. ”
- Gotthard Strohmaier, "Biruni" in Josef W. Meri, Jere L. Bacharach, Medieval Islamic Civilization: A-K, index: Vol. 1 of Medieval Islamic Civilization: An Encyclopedia, Taylor & Francis, 2006. excerpt from page 112: "Although his native Khwarezmian was also an Iranian language, he rejected the emerging neo-Persian literature of his time (Firdawsi), preferring Arabic instead as the only adequate medium of science.";
- D. N. MacKenzie, Encyclopædia Iranica, "CHORASMIA iii. The Chorasmian Language". Excerpt: "Chorasmian, the original Iranian language of Chorasmia, is attested at two stages of its development..The earliest examples have been left by the great Chorasmian scholar Abū Rayḥān Bīrūnī.";
- Helaine Selin, "Encyclopaedia of the history of science, technology, and medicine in non-western cultures ", Springer, 1997. "Al-Biruni", pg 157: "his native language was the Khwarizmian dialect"
- D.J. Boilot, "Al-Biruni (Beruni), Abu'l Rayhan Muhammad b. Ahmad", in Encyclopaedia of Islam (Leiden), New Ed., vol.1:1236-1238. Excerpt 1: "He was born of an Iranian family in 362/973 (according to al-Ghadanfar, on 3 Dhu'l-Hididja/ 4 September — see E. Sachau, Chronology, xivxvi), in the suburb (birun) of Kath, capital of Khwarizm". Excerpt 2:"was one of the greatest scholars of mediaeval Islam, and certainly the most original and profound. He was equally well versed in the mathematical, astronomic, physical and natural sciences and also distinguished himself as a geographer and historian, chronologist and linguist and as an impartial observer of customs and creeds. He is known as al-Ustdadh, "the Master".