Abu Ali Sina, Pur Sinа, and often known in the West as Avicenna

Later life and death

The remaining ten or twelve years of Avicenna's life were spent in the service of the Kakuyid ruler Muhammad ibn Rustam Dushmanziyar (also known as Ala al-Dawla), whom he accompanied as physician and general literary and scientific adviser, even in his numerous campaigns.^[34]

During these years he began to study literary matters and philology, instigated, it is asserted, by criticisms on his style. A severe colic, which seized him on the march of the army against Hamadan, was checked by remedies so violent that Avicenna could scarcely stand. On a similar occasion the disease returned; with difficulty he reached Hamadan, where, finding the disease gaining ground, he refused to keep up the regimen imposed, and resigned himself to his fate.^[34]

His friends advised him to slow down and take life moderately. He refused, however, stating that: "I prefer a short life with width to a narrow one with length".^[39] On his deathbed remorse seized him; he bestowed his goods on the poor, restored unjust gains, freed his slaves, and read through the Quran every three days until his death.^[34][40] He died in June 1037, in his fifty-six year, in the month of Ramadan, and was buried in Hamadan, Iran.