Nanak was a travelling guru. He visited many places in India, Arabia and Mesopotamia.
In Mecca is the Ka'aba, the sacred stone of the Muslims.
One morning nanak was found sleeping with his feet turned to the stone! Some Muslims were furious!
"How dare you be so insulting! How dare you sleep with you feet towards the face of God!"
Gently, Nanak says: "Very well then. Turn my feet to where God is not."
Source: Pictures From Mystics