BY: SOPHIA ARJANA    SOURCE: BRITISH LIBRARYJUN 12, 2021 The Kabah in the holy city of Mecca, as depicted in a copy of the Dala’il al-khayrat (Guide to Goodness), a devotional prayer-book, produced in India in the 19th century (photo: British Library). Contents  1 What is hajj? 2 Why is Mecca so important to Muslims? 3 Are there other Islamic pilgrimages?