As such, pilgrims strip themselves of the material trappings of wealth and status and wear the plain white seamless robes of Ihram to indicate their spiritual state.

In addition to circling the Kaaba, pilgrims say two Rakaat prayers at the Place of Abraham, re-enact Hajarah’s hunt for water between Safa and Marwah, drink from the Zamzam Well, stand vigil at Mount Arafat and on the plains of Muzdalifa and cast stones at three pillars, a symbolic act representing evil being driven from the hearts of men.

When is it?

The Hajj takes place between the eighth and 13th day of Dhu al-Hijjah, the date of which alters every year by the Gregorian calendar because the Islamic lunar calendar is 11 days shorter.

Eid al-Adha also falls on the 10th day of the month. This is a Festival of Sacrifice in honour of Abraham’s willingness to sacrifice Ishmael at Allah’s request, a supreme act of faith, which he was prevented from having to carry out by the deity providing him with a goat to slaughter in his son’s stead.

Today, the same animal is sacrificed in memory of the story. It is cut into thirds: one portion is given to the impoverished, another to friends and relatives and the last retained and eaten by the family.

Is the Hajj safe?

Two million pilgrims are expected to take part this year, thousands of whom are embarking from the UK.

While the occasion is a holy one, overcrowding led to a fatal stampede in 2015 which killed over 2,000 pilgrims and Hajj fraudsters attempting to con visitors remain a real problem.

“Some will arrive in Saudi Arabia to discover the accommodation they booked does not exist while others will find that their whole trip is in fact a scam set up by illegitimate travel operators that have disappeared with thousands of pounds of their money,” the Metropolitan Police have warned.

Advice on staying safe includes making sure you travel with a reputable tour operator who is ATOL-protected and part of a recognised trade association such as ABTA. All members of the latter have to follow a code of conduct, reducing the risk of fraud.

Ensure you have all of your terms and conditions in writing and make sure your flight details, accommodation and Hajj visa are all valid, experts advise.