Guru Nanak Dev ji on his way back from Mecca travelled through Afghanistan. At Kabul, the capital city, he held discourse several Muslim holy men. They cautioned him to be careful because he was travelling in a -predominantly Muslim land. Guru ji told them that Gods 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 Gurudwara dedicated to Guru Nanak Dev ji was established in Kabul but it was demolished during the reconstruction of the city because it stood in the way of a new road.