Aksel, from where did you find that translation? And his Avestan name?
eta:
Aha! Found the translation excerpted in the book I quoted. WikiP has it "A unique Arabic copy is kept at Oxford and was translated in 1831 by F. Rosen."
"The Algebra" translated by Frederick Rosen, whom he names al-Khwarizmi as "Mohammed ben Musa"
Don't be so hasty awais, either during quoting Islamic Scriptures out of context to make them sound benign & beautiful, or while giving undue credit to Islam.
Here's a
book on al Khwarizmi by Corona Brezina where she too writes about Tabari mentioning Khwarizmi as a Zoroastrian. The counter evidence is that Khwarizmi praised Muhammad & Islam in his writings, but that would pretty much compulsory for someone living under Islamic rule. She further states that his family was probably Zoroastrian, & he too was probably a follower of that faith in his youth.
He might have converted to Islam in later life, & this conversion greatly facilitated his position in Court, he was a Muslim, from a fire worshipping dhimmi now!
And here's the
Wikipedia article on him:
The historian al-Tabari gave his name as Muhammad ibn Musa al-Khwārizmī al-Majousi al-Katarbali (Arabic: محمد بن موسى الخوارزميّ المجوسيّ القطربّليّ). The epithet al-Qutrubbulli indicates he might instead have came from Qutrubbull, a small town near Baghdad. Regarding al-Khwārizmī's religion, Toomer writes:
Another epithet given to him by al-Ṭabarī, "al-Majūsī," would seem to indicate that he was an adherent of the old Zoroastrian religion. This would still have been possible at that time for a man of Iranian origin, but the pious preface to al-Khwārizmī's Algebra shows that he was an orthodox Muslim, so al-Ṭabarī's epithet could mean no more than that his forebears, and perhaps he in his youth, had been a Zoroastrian.[8]
In Ibn al-Nadīm's Kitāb al-Fihrist we find a short biography on al-Khwārizmī, together with a list of the books he wrote. Al-Khwārizmī accomplished most of his work in the period between 813 and 833. After the Islamic conquest of Persia, Baghdad became the center of scientific studies and trade, and many merchants and scientists, from as far as China and India, traveled to this city?and apparently, so did Al-Khwārizmī. He worked in Baghdad as a scholar at the House of Wisdom established by Caliph al-Maʾmūn, where he studied the sciences and mathematics, which included the translation of Greek and Sanskrit scientific manuscripts.
Of course, the Muslims made full use of Greaco Indian knowledge, while giving the people of those civilizations a terrible time!
Now they have to make a big brouhaha about their scientific(or is it translation?
) achievements, when they had newly conquered successful & achieving cultures, & made dhimmis of the population, slowly draining out their creativity-& shout from the rooftops about the fact that a Zoroastrian\ newly converted from Zoroastrianism to Islam to be freed of dhimmi status guy had contributed to Algebra!
Topic: Pre Islamic Achievements of Islamic or Islam Ruled Societies