Imam an-Nasal spent his days in

Imam an-Nasai spent his days in Khurasan. Khurasan is a historical region located in northeastern Iran, parts of Afghanistan, and Central Asia. It was a very important cultural and intellectual center during Imam an-Nasai's time.
Imam an-Nasai was a renowned scholar and had a deep knowledge of the hadith (sayings and actions of Prophet Muhammad). He spent a significant amount of time in Khurasan, studying, collecting, and teaching hadiths.
Khurasan was known for its vibrant scholarly community and was home to many prominent Islamic scholars. Imam an-Nasai benefited from the rich intellectual environment of Khurasan and devoted himself to the study and preservation of the hadiths.
His dedication in collecting hadiths led to the compilation of a famous book called "Sunan an-Nasai," which is one of the six most authentic books of hadiths in Sunni Islam. This book contains a collection of hadiths along with their chains of narrators, making it a valuable resource for scholars and students of Islamic knowledge.
In conclusion, Imam an-Nasai spent his days in Khurasan, where he immersed himself in the study of hadiths and contributed greatly to the preservation of Islamic knowledge through his compilation of "Sunan an-Nasai."