The Hijri calendar, also known as the Lunar Hijri calendar and as the Islamic, Muslim or Arabic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the Hajj. In almost all countries where the predominant religion is Islam, the civil calendar is the Gregorian calendar, with Syriac month-names used in the Levant and Mesopotamia but the religious calendar is the Hijri one.
Year 787 (DCCLXXXVII) was a common year starting on Monday of the Julian calendar. The denomination 787 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Herman of Carinthia, also called Hermanus Dalmata or Sclavus Dalmata, Secundus, by his own words born in the "heart of Istria", was a philosopher, astronomer, astrologer, mathematician and translator of Arabic works into Latin.
Abū ʿĪsā Muḥammad ibn ʿĪsā as-Sulamī aḍ-Ḍarīr al-Būghī at-Tirmidhī, often referred to as Imām al-Termezī/Tirmithī, was an Islamic scholar, and collector of hadith from Termez. He wrote al-Jami` as-Sahih, one of the six canonical hadith compilations in Sunni Islam. He also wrote Shama'il Muhammadiyah, a compilation of hadiths concerning the person and character of the Islamic prophet, Muhammad. At-Tirmidhi was also well versed in Arabic grammar, favoring the school of Kufa over Basra due to the former's preservation of Arabic poetry as a primary source.
Ifriqiya, also known as al-Maghrib al-Adna, was a medieval historical region comprising today's Tunisia and eastern Algeria, and Tripolitania. It included all of what had previously been the Byzantine province of Africa Proconsularis and extended beyond it, but did not include the Mauretanias.
Al-Mustansir, more fully al-Mustansir billah, is a Muslim regnal surname and may refer to:
Abu Ma'shar al-Balkhi, Latinized as Albumasar, was an early Persian Muslim astrologer, thought to be the greatest astrologer of the Abbasid court in Baghdad. While he was not a major innovator, his practical manuals for training astrologers profoundly influenced Muslim intellectual history and, through translations, that of western Europe and Byzantium.
Abū ʿUbayd ʿAbd Allāh ibn ʿAbd al-ʿAzīz ibn Muḥammad ibn Ayyūb ibn ʿAmr al-Bakrī, or simply al-Bakrī was an Arab Andalusian historian and a geographer of the Muslim West.
In astrology, the Arabian/Arabic parts or lots are constructed points based on mathematical calculations of three horoscopic entities such as planets or angles. The distance between two of the points is added to the position of the third to derive the location of the lot.
Nasiʾ(Arabic: ٱلنَّسِيء, an-Nasīʾ, "postponement"), also spelled Nasii, or Nasie, was an aspect of the pre-Islamic Arabian calendar, mentioned in the Quran in the context of the "four forbidden months". In pre-Islamic Arabia, the decision of "postponement" had been administered by the Banu Kinanah, by a man known as the al-Qalammas. Different interpretations of its meaning have been proposed.
Some medieval Muslims took a keen interest in the study of astrology, despite the Islamic prohibitions: partly because they considered the celestial bodies to be essential, partly because the dwellers of desert-regions often travelled at night, and relied upon knowledge of the constellations for guidance in their journeys. After the advent of Islam, the Muslims needed to determine the time of the prayers, the direction of the Kaaba, and the correct orientation of the mosque, all of which helped give a religious impetus to the study of astronomy and contributed towards the belief that the heavenly bodies were influential upon terrestrial affairs as well as the human condition. The science dealing with such influences was termed astrology, a discipline contained within the field of astronomy. The principles of these studies were rooted in Arabian, Persian, Babylonian, Hellenistic and Indian traditions and both were developed by the Arabs following their establishment of a magnificent observatory and library of astronomical and astrological texts at Baghdad in the 8th century.
Abū’l-Ḥasan ʻAlī ibn Ismāʻīl, known as Ibn Sīdah, or Ibn Sīdah'l-Mursī, (c.1007-1066), was a linguist, philologist and lexicographer of Classical Arabic from Andalusia. He compiled the encyclopedia al-Kitāb al-Mukhaṣṣaṣ (المخصص)(Book of Customs) and the Arabic language dictionary Al-Muḥkam wa-al-muḥīt al-aʻẓam (The Great and Comprehensive Arbiter". His contributions to the sciences of language, literature and logic were considerable.
The demolition or burning of Masjid al-Dirar , or the Mosque of Dissent, is mentioned in the Qur'an. Masjid al-Dirar was a Medinian mosque that was erected close to the Quba' Mosque and which the Islamic prophet Muhammad initially approved of but subsequently had destroyed while he was returning from the Expedition to Tabouk. In the main account narrated by the majority of scholars, the mosque was built by 12 hypocrites (munafiqeen) on the commands of Abu 'Amir al-Rahib; a Hanif who refused Muhammad's invitation to Islam and instead fought along with the Meccan non-Muslims against Islam in the Battle of Uhud. Abu 'Amir reportedly urged his men to establish a stronghold and prepare whatever they can of power and weapons as he promised and insinuated to them that he will lead an army, backed by Heraclius, to fight Muhammad and his companions, and defeat his message by expelling him from Medina. Ahmad ibn Yahya al-Baladhuri also relates that the men, who built the Al-Dirar mosque "for mischief and for infidelity and to disunite the Believers" refused to pray in Masjid al-Quba claiming that it was built in a place where a donkey used to be tied up.
Several calendars have been used in pre-Islamic Arabia. Inscriptions of the ancient South Arabian calendars reveal the use of a number of local calendars. At least some of these South Arabian calendars followed the lunisolar system. For Central Arabia, especially Mecca, there is a lack of epigraphic evidence, but details are found in the writings of Muslim authors of the Abbasid era. Some historians maintain that the pre-Islamic calendar used in Central Arabia was a purely lunar calendar similar to the modern Islamic calendar. Others concur that the pre-Islamic calendar was originally a lunar calendar, but suggest that about 200 years before the Hijra it was transformed into a lunisolar calendar, which had an intercalary month added from time to time to keep the pilgrimage within the season of the year when merchandise was most abundant.
al-Samarqandi or Samarqandi is a nisba meaning "from Samarqand", a city in Central Asia, in modern Uzbekistan. It may refer to:
Abu Ma'shar Najih al-Sindi al-Madani, d. 787, was a Muslim historian and hadith scholar. A contemporary of Ibn Ishaq, he wrote the Kitāb al-Maghāzī, fragments of which are preserved in the works of al-Waqidi and Ibn Sa'd. Al-Tabari quoted him for Biblical information and chronological statements about the Islamic prophet Muhammad and later Muslim conquests. As a hadith transmitter, Muslim experts in biographical evaluation generally considered him unreliable.
