Rabbi David HaLevi, known as Moul Dra, is one of the saints most venerated by Moroccan Jews. Born in Seville, the son of Rabbi Shmuel HaLevi ben Zimra, he was among the exiles from Spain and reached Morocco in 1492.

He studied in Fez under Rabbi Yehuda Uziel, who granted him semicha, and then settled in Tamegroute in the Draa valley, where he earned his living by the work of his hands. A kabbalist with a broad scientific education, he became one of the leading figures of the Draa circle of kabbalists and developed a Kabbalah of letter combinations in the tradition of Rabbi Avraham Abulafia. The Jews of the region revered him, attributing to him mystical powers and revelations of Elijah the Prophet.

He wrote Sefer HaMalchut, a kabbalistic work modelled on Sefer Yetzirah, whose commentary was completed by Rabbi Avraham Eskira. He passed away around the middle of the sixteenth century.

According to tradition he rests in the Draa valley in the south of the country. His tomb, covered with large palm branches, earned him the popular name "Moul Nakhla Lekhdra", the saint of the green palm, and many come to pray there throughout the year.