Hasan Abdal: Pilgrims descended from all over the world on a small town in Pakistan that is home to one of Sikhism's holiest sites this week, dipping into holy spring water and solemnly offering prayers.

They have come from India, Britain and the Middle East to the Panja Sahib Gurdwara in Hasan Abdal, 55 kilometres (35 miles) from Islamabad, where Guru Nanak, the founder of the religion, is said to have imprinted his hand.