Every year, more than 2 million Muslims from all over the world perform the special pilgrimage called hajj in Saudi Arabia. Performing hajj is an extremely important ritual for Muslims as it is one of the five pillars of Islam, which make up the core practices and beliefs. It is obligatory for Muslims to make the annual pilgrimage at least once in their lifetime as long as they are able-bodied and financially able to afford the trip.

In a rare move, Saudi Arabia announced on July 6 that hajj would be canceled for the majority of the world’s Muslims—the first time in recent years that it has been disrupted by an epidemic. This is also the first time that Saudi Arabia has significantly curtailed the pilgrimage since the country was founded in 1932—only people living in Saudi Arabia may perform the pilgrimage this year. “Hajj Minister Mohammad Benten said the government is still in the process of reviewing the number of overall pilgrims allowed, saying they could be ‘around 1,000, maybe less, maybe a little more,’” according to Al-Jazeera. Furthermore, no one over the age of 65 will be allowed to make the pilgrimage this year. Authorities released strict guidelines including a ban on touching the Kaaba, one of the holiest sites in Islam.

In March, the Saudi government made the decision to enforce travel restrictions into the Muslim holy sites of Mecca and Medina for umrah, a pilgrimage that can be performed at any time of the year that is not obligatory for Muslims as hajj is. While that decision caused frustration for some, hajj is sacred and typically a once-in-a-lifetime opportunity for Muslims. As such, the decision to cancel hajj is devastating to many who were planning to go.

For the rest of the world’s Muslims, fears of spreading the coronavirus during the upcoming Eid al-Adha holiday has prompted leaders to urge Muslims to continue following coronavirus guidelines.

Eid al-Adha marks the completion of the annual five to six day pilgrimage, and takes place on the tenth day of Dhul-Hijja, the last month of the Islamic lunar calendar. Eid al-Adha serves as a remembrance of the willingness of the prophet Ibrahim (Abraham to Christians and Jews) to sacrifice his son to God. The holiday does not celebrate bloodshed in order to please God—a sheep was provided at the last moment—but instead honors giving up something beloved and promotes charity and equality. To commemorate God’s intervention, an animal is sacrificed (typically a sheep, but goats, camels and cows are also acceptable) and the meat divided into three portions—one-third goes to the poor and needy, one-third to friends and family, and the final portion is reserved for one’s own household.

Muslim countries’ leaders worry that Eid al-Adha celebrations will cause a spike in COVID-19 cases as people travel to animal markets and slaughterhouses to perform the sacrifice. The head of Istanbul’s Chamber of Veterinary Surgeons, Murat Arslan, has warned that 1 million people could be at risk of contracting the virus in Turkey. As such, he said face masks should be made mandatory and disposable plastic shoe covers should be worn upon entering the marketplace, and buyers and sellers should avoid shaking hands upon completing a sale. Pakistan’s National Institute of Health is urging the public to stick to the coronavirus guidelines, especially on Eid al-Adha. The Pakistani government issued new rules for the holiday, including instructing people to avoid greeting friends and relatives on Eid al-Adha and urging sellers to arrange online purchases when possible, according to The Washington Post. Oman announced a complete lockdown beginning on July 25 and ending on Aug. 8, a drastic effort to prevent a spike in positive COVID-19 cases.

Hajj begins on July 29 with Eid al-Adha being celebrated on July 31 by the majority of Muslims.