For Muslims and non-Muslims alike, the stock image of an Islamic scholar is a gray-bearded man. Women tend to be seen as the subjects of Islamic law rather than its shapers. And while some opportunities for religious education do exist for women — the prestigious Al-Azhar University in Cairo has a women’s college, for example, and there are girls’ madrasas and female study groups in mosques and private homes — cultural barriers prevent most women in the Islamic world from pursuing such studies. Recent findings by a scholar at the Oxford Center for Islamic Studies in Britain, however, may help lower those barriers and challenge prevalent notions of women’s roles within Islamic society. Mohammad Akram Nadwi, a 43-year-old Sunni alim, or religious scholar, has rediscovered a long-lost tradition of Muslim women teaching the Koran, transmitting hadith (deeds and sayings of the Prophet Muhammad) and even making Islamic law as jurists.

Akram embarked eight years ago on a single-volume biographical dictionary of female hadith scholars, a project that took him trawling through biographical dictionaries, classical texts, madrasa chronicles and letters for relevant citations. “I thought I’d find maybe 20 or 30 women,” he says. To date, he has found 8,000 of them, dating back 1,400 years, and his dictionary now fills 40 volumes. It’s so long that his usual publishers, in Damascus and Beirut, have balked at the project, though an English translation of his preface — itself almost 400 pages long — will come out in England this summer. (Akram has talked with Prince Turki al-Faisal, Saudi Arabia’s former ambassador to the United States, about the possibility of publishing the entire work through his Riyadh-based foundation.)

The dictionary’s diverse entries include a 10th-century Baghdad-born jurist who traveled through Syria and Egypt, teaching other women; a female scholar — or muhaddithat — in 12th-century Egypt whose male students marveled at her mastery of a “camel load” of texts; and a 15th-century woman who taught hadith at the Prophet’s grave in Medina, one of the most important spots in Islam. One seventh-century Medina woman who reached the academic rank of jurist issued key fatwas on hajj rituals and commerce; another female jurist living in medieval Aleppo not only issued fatwas but also advised her far more famous husband on how to issue his.

Not all of these women scholars were previously unknown. Many Muslims acknowledge that Islam has its learned women, particularly in the field of hadith, starting with the Prophet’s wife Aisha. And several Western academics have written on women’s religious education. About a century ago, the Hungarian Orientalist Ignaz Goldziher estimated that about 15 percent of medieval hadith scholars were women. But Akram’s dictionary is groundbreaking in its scope.