Nasir Khusaro Hamiduddin Abu Muin Nasir bin Khusaro bin Harith al-Qubandiyani was a celebrated poet, philosopher and traveller. He is ranked as the Real Wisdom of the East. He was born in 394/1003 and came in Egypt in 439/1047, where he aboded for about three years, until 441/1050, during which time he had his audience with al-Mustansir. He was appointed as the hujjat of Khorasan and Badakhshan. It is certainly due to his tireless endeavours that there are millions of Ismailis in Afghanistan, Tajikistan, China, Chitral, Hunza, Gilgit, Pamir, Yarkand etc. He spent the rest of his life in the bleak valley of Yamghan, where he died in 481/1088. In the introductory note of 'Wajh-i Din' (ed. by Ghulam Reza Aavani, Tehran, 1977, p. 1), Seyyed Hossein Nasr writes, 'He is one of the greatest Islamic philosopher and deserves to be studied as a major intellectual figure of Islam in general and of Ismailism in particular.'Besides being a great thinker and erudite writer, Nasir Khusaro was also an eminent traveller. The distance he traversed from Balkh to Egypt, and thence to Mecca and then to Fars via Basra, and ultimately back to Balkh, not counting excursions for visiting shrines and so on, was about 2220 parasangs (each one about 3