Mordecai ben Nissan the Karaite. Notitia Karaeorum ex Mardochaei/Dod Mordecai (Amicus Mardochaei). Johann Christoph Wolf translator.

Dod Mordecai is the response of a Karaite, Mordecai ben Nissan, living in Krosni Ostro, province of Lviv (Lemberg), to the questions posed to him by the learned Jacob Trigland, professor of theology at the University of Leiden. Trigland sought information concerning the schism between the Rabbanites and the Karaites. The correspondence between the professor and the Karaite took place in 1699. The second part of the work consists of Trigland’s original treatise, Diatribe de Secta Karaeorum (pp. 161-317). According to J. Fürst, this work was first published in Delft in 1703. Furst, Bibliotheca Judaica III, p. 447. One of the topics discussed is the historic linkage of Karaism to the earlier Sadduceanism, a topic still heatedly debated by scholars. Several medieval rabbis, most notably Maimonides, saw Karaitism as the continuation of Sadduceanism, a sect that arose in the Second Temple era. Mordecai the Karaite disputes this by saying that by Karaite standards as well the Sadducees would be considered a heretical sect, as they denied the existence of an afterlife. Pp. 16-24. An important source for the study of the Karaites, a sect within Judaism that denies the validity of the Oral Law