Qibla in the context of "Science in the medieval Islamic world"

The term "Holy Land" is used to collectively denote areas of the Southern Levant that hold great significance in the Abrahamic religions, primarily because of their association with people and events featured in the Bible. It is traditionally synonymous with what is known as the Land of Israel (Zion) or the Promised Land in a biblical or religious context, or as Canaan or Palestine in a secular or geographic context—referring to a region that is mostly between the Mediterranean Sea and the Jordan River. Today, it chiefly overlaps with the combined territory of the modern states of Israel and Palestine. Most notable among the religions that tie substantial spiritual value to the Holy Land are Judaism, Christianity, and Islam.

A considerable part of the Holy Land's importance derives from Jerusalem, which is regarded as extremely sacred in and of itself. It is the holiest city in Judaism and Christianity and the third-holiest city in Islam (behind Mecca and Medina in the Arabian Peninsula). The Temple in Jerusalem, referring to Solomon's Temple and the Second Temple, was the central place of worship for Israelites and Jews and serves as the namesake of the Temple Mount. According to the Bible, Jerusalem was made the capital city of the Kingdom of Israel and Judah under the House of David, thereafter being inherited by the Kingdom of Judah alone. Jesus of Nazareth, first brought to Jerusalem to be presented at the Second Temple shortly after his birth, was also highly active throughout the city during his life as a preacher. In Islamic belief, Isra' and Mi'raj refer to a night journey by Muhammad to the Holy Land, with the supernatural "Buraq" transporting him from Mecca's Masjid al-Haram to Jerusalem's Al-Aqsa Mosque, where he ascended to heaven and met God and past Islamic prophets and messengers; Jerusalem also served as the qibla (direction of Muslim prayers) prior to Mecca's Kaaba.

Salah (Arabic: ٱلصَّلَاةُ, romanized: aṣ-Ṣalāh, also spelled Salat), also known as Namaz (Persian: نماز, romanized: namāz), is the practice of formal worship in Islam, consisting of a series of ritual prayers performed at prescribed times daily. These prayers, which consist of units known as rak'ah, include a specific set of physical postures, recitation from the Quran, and prayers from the Sunnah, and are performed while facing the direction towards the Kaaba in Mecca (qibla). The number of rak'ah varies depending on the specific prayer. Variations in practice are observed among adherents of different madhahib (schools of Islamic jurisprudence). The term salah may denote worship in general or specifically refer to the obligatory prayers performed by Muslims five times daily, or, in some traditions, three times daily.

The obligatory prayers play an integral role in the Islamic faith, and are regarded as the second and most important, after shahadah, of the Five Pillars of Islam for Sunnis, and one of the Ancillaries of the Faith for Shiites. In addition, supererogatory salah, such as Sunnah prayer and Nafl prayer, may be performed at any time, subject to certain restrictions. Wudu, an act of ritual purification, is required prior to performing salah. Prayers may be conducted individually or in congregation, with certain prayers, such as the Friday and Eid prayers, requiring a collective setting and a khutbah (sermon). Some concessions are made for Muslims who are physically unable to perform the salah in its original form, or are travelling.

Mecca, officially Makkah al-Mukarramah, is the holiest city in Islam. It is located in the Hejaz region of western Saudi Arabia and is the capital of Mecca Province. Mecca is considered the birthplace of Islam and the birthplace of the Islamic prophet Muhammad.

It is 70 km (43 mi) inland from Jeddah on the Red Sea, in a narrow valley 277 m (909 ft) above sea level. Its metropolitan population in 2022 was 2.4 million, making it the third–most populated city in Saudi Arabia after Riyadh and Jeddah. The Cave of Hira atop the Jabal al-Nour, just outside the city, is where Muslims believe the Quran was first revealed to Muhammad. Visiting Mecca for the Ḥajj is an obligation upon all able Muslims. The Great Mosque of Mecca, known as the Masjid al-Haram, is home to the Kaaba, believed by Muslims to have been built by Abraham and Ishmael. It is Islam's holiest site and the direction of prayer (qibla) for all Muslims worldwide. Around 44.5% of the population are Saudi citizens and around 55.5% are Muslim foreigners from other countries. Pilgrims more than triple the population number every year during the Ḥajj pilgrimage, observed in the twelfth Hijri month of Dhūl-Ḥijjah. With over 10.8 million international visitors in 2023, Mecca was one of the ten most visited cities in the world.

A mosque (/mɒsk/ MOSK), also called a masjid (/ˈmæsdʒɪd, ˈmʌs-/ MASS-jid, MUSS-), is a place of worship for Muslims. The term usually refers to a covered building, but can be any place where Islamic prayers are performed; such as an outdoor courtyard.

Originally, mosques were simple places of prayer for the early Muslims, and may have been open spaces rather than elaborate buildings. In the first stage of Islamic architecture (650–750 CE), early mosques comprised open and closed covered spaces enclosed by walls, often with minarets, from which the Islamic call to prayer was issued on a daily basis. It is typical of mosque buildings to have a special ornamental niche (a mihrab) set into the wall in the direction of the city of Mecca (the qibla), which Muslims must face during prayer, as well as a facility for ritual cleansing (wudu). The pulpit (minbar), from which public sermons (khutbah) are delivered on the event of Friday prayer, was, in earlier times, characteristic of the central city mosque, but has since become common in smaller mosques. To varying degrees, mosque buildings are designed so that there are segregated spaces for men and women. This basic pattern of organization has assumed different forms depending on the region, period, and Islamic denomination.

Salat al-jama‘ah (Congregational Prayer) or prayer in congregation (jama'ah) is considered to have more social and spiritual benefit than praying by oneself. When praying in congregation, the people stand in straight parallel rows behind the chosen imam, facing qibla. The imam, who leads the congregation in salat, is usually chosen to be a scholar or the one who has the best knowledge of the Qur'an, preferably someone who has memorised it in its entirety (a hafiz) . In the first row behind the Imam, if available, would be another hafiz to correct the Imam in case a mistake is made during the performance of the salat. The prayer is performed as normal, with the congregation following the actions and movements of the imam as he performs the salat.

The Kaaba (Arabic: الكعبة, romanized: al-Kaʿba, lit. 'the Cube'), also spelled Kaʽba, Kaʽbah or Kabah, sometimes referred to as al-Kaʽba al-Musharrafa (Arabic: الكعبة المشرفة, lit. 'the Honored Ka'ba'), is a stone building at the center of Islam's most important mosque and holiest site, the Masjid al-Haram in Mecca, Saudi Arabia. It is considered by Muslims to be the Baytullah (Arabic: بيت اللَّٰه, lit. 'House of God') and determines the qibla (Arabic: قبلة, lit. 'direction of prayer') for Muslims around the world.

According to Islamic tradition, the Kaaba was rebuilt several times throughout history, most famously by Ibrahim and his son Ismail, when he returned to the valley of Mecca several years after leaving his wife Hajar and Ismail there upon Allah's command. The current structure was built after the original building was damaged by a fire during the siege of Mecca by the Umayyads in 683 CE. Circling the Kaaba seven times counterclockwise, known as Tawaf (Arabic: طواف, romanized: tawaaf), is a Fard rite for the completion of the Hajj and Umrah pilgrimages. The area around the Kaaba where pilgrims walk is called the Mataaf.