Guru Nanak Dev Ji was one of the most well-travelled people of premodern history and went on Udasis (travels) to spread the Truth. On those trips Guru Ji traveled several places including across India, Tibet, Mecca, Turkey and Iran. Guru Ji traveled with Bhai Mardana Ji, a longtime Muslim companion, who would play the rabab, an Afghani instrument, every time Guru Ji recited Bani (teachings).