One man had escaped from Bukhara after its capture and had come to Khurasan.

Explanation:
Bukhara is a historical city located in present-day Uzbekistan. It was an important center of culture, trade, and scholarship in Central Asia during the medieval period. The city was renowned for its Islamic institutions, including madrasas and mosques.

1. Bukhara's Capture:
At the time of the man's escape, Bukhara had been captured by an opposing force. It is important to note that the question does not provide specific details about who captured the city or the reason behind its capture. However, throughout history, Bukhara was frequently attacked and conquered by different empires, including the Mongols and Timurids.

2. Escaping from Bukhara:
The man managed to escape from Bukhara amidst the chaos caused by the city's capture. It is likely that he faced great danger and difficulty during his escape, as conquering armies often engage in looting, destruction, and violence. However, the question does not provide further information about the man's escape route or the circumstances surrounding his departure.

3. Arrival in Khurasan:
Khurasan, also spelled as Khorasan, is a historical region that encompasses parts of modern-day Iran, Afghanistan, and Turkmenistan. It was an important region in the Persian Empire and later became a significant cultural and political center under various Islamic dynasties.

The man, after escaping from Bukhara, managed to reach Khurasan. This suggests that Khurasan was a relatively safe haven or an alternative destination for people fleeing the turmoil in Bukhara. The question does not elaborate on the man's purpose for coming to Khurasan or his experiences after his arrival.

In conclusion, one man managed to escape from Bukhara after its capture and sought refuge in Khurasan. The question highlights the historical context and the movement of people during times of conflict and instability.