Abu Raja Al-Sindi was an eminent Arabic scholar of Sindhi origin in the current day Pakistan. He specialized in the subjects of Quran, Hadith and Arab literature. He is believed to be ranked among the significant poets of Arabic from the place of Mansura, Sindh. He was also a teacher to several Arab scholars, administrators and travelers to Sindh.
Contribution and work
It is claimed that at the appeal of his clan leader Mabruk, Abu Raja Al-Sindi embraced the religion Islam. And was believed to be among those who translated the Quran into the language of Sindhi during the era of the Abbasid ruler Harun al-Rashid and the Abbasid Vizier of Sindh Abdullah Ibn Omar Hibari (d. 893) ruled for over 30 years and made remarkable contribution to the cultural and economic progress of the Sindhi province. It was during the Hibari reign, that the province of Sindh became closer in its ties and relations with the city of Baghdad (Abode of Peace). Because of the patronage extended by the early Abbasid Caliphs and their Baramakid Grand Vizier’s, Abu Raja Al-Sindi and several Sindhi’s went to the city of Baghdad and involved themselves in the scientific and literary pursuits they translated a major number of Sanskrit books on the subjects of mathematics, astronomy, astrology, medicine, literature and ethics into the language of Arabic.
Among those who traveled to the city of Baghdad was the popular mathematician Sind ibn Ali, a co-worker of Al-Khwarizmi, the 2 authors have also issued texts under the name of Kitāb al-ğabr wa-l-muqābala, they made better the structure of basic mathematics and translated and worked on the popular astronomical chart the Zij al-Sindhind.
Zīj al-Sindhind (Arabic: زيج “astronomical tables of Sind and Hind”) is a work containing nearly thirty-seven chapters on the specific calendar and astronomical calculations and 116 tables with calendar, astronomical and astrological information, as well as a table of sine values. This is the first of many Arabic Zij’s deployed on the Indian astronomical methods called as the Sindhind. The work consisted of tables for the movements of the sun, the moon and the 5 planets known at that time. This outstanding work marked the turning point in Islamic astronomy. Hitherto, Muslim astronomers had accepted an importantly research access to the field, translating works of others and learning already discovered knowledge. The Al-Khwarizmi’s remarkable work marked the initiation of non-traditional procedures of study and calculation.