that daughters inherit half as much property as sons, particularly when livestock was at issue. In parts of Eritrea, the tendency to treat land as the corporate property of a descent group (lineage or clan) precluded following the Islamic principle of division of property among one's heirs. The First Hijrah When Mohammed saw the persecution to which his followers were subjected to in Mecca, he told them to find safe haven in northern Ethiopia, Abyssinia, where they would "find a king there who does not wrong anyone." It was the first hijra (migration) in Islamic history. The persecution his followers suffered was due to polytheists who harmed the weaker Muslims and blackmailed richer Muslims, causing a severe decline in business. The abuse the Muslims endured eventually led people to convert while others held their Islamic beliefs. Abdullah ibn Masud was a new convert and participated in a Muslim group where a member suggested reciting the Qur’an in Masjid al-Haram because the people of the Quraysh never heard it before. Abdullah agreed to do so and the polytheists were so amazed they pounded on him until he bled to prevent the verses from affecting them. Subsequently, because of the threats early Muslims suffered the verses from An-Nahl were revealed. According to historians, these verses were specifically sent as instructions for the migration to Abyssinia. The threats by the polytheists were so harsh it prompted the Prophet to save his people and have them migrate to Abyssinia to escape the harassment making it the first migration in Islam. The fourth holiest Muslim city Ethiopia is home to Harar. According to UNESCO, it is regarded as the fourth holy city of Islam. It has 82 mosques, three of which date from the 10th century, as well as 102 shrines. The city of Harar is located in Eastern Ethiopia and got its role of being an Islamic center in the 16th century AD. Harar is contained by a , a wall built of local Hashi stone bonded together by mud and wood and it was able to protect the city from the invasion of the non-Muslim Oromo in 1567. Harar began to develop the characteristics of an Islamic city with the Shafi‘i school in the 19th century as well as Harar serving as a conduit for the spreading of Islam in the Oromo population during an Islamization campaign under the reign of Amir Muhammad.