Guru Nanak Dev on his way back from Mecca traveled through Afghanistan. At Kabul, the capital city, he held discourse with several Muslim holy men. They cautioned him to be careful because he was traveling in a predominantly Muslim land. The Guru told them that God’s light shines alike in all; even their bodies He made alike. Some undergo circumcision and call themselves Muslims, others make a vermilion mark on their forehead and wear a sacred thread on their body and become Hindus. Later, a Gurdwara dedicated to Guru Nanak Dev was established in Kabul but it was demolished during the reconstruction of the city because it stood in the way of a new road.