Syeikh Dawud ibn Isma'il ibn Mustafa al-Rumi, known as Baba Daud or Daud al-Jawi al-Fansuri, was a scholar active in Aceh from roughly the mid-seventeenth to the mid-eighteenth century; tradition links the nisba 'Rumi' to Turkish descent. He was the leading student and khalifa of Syeikh Abdurrauf as-Singkili (Teungku Syiah Kuala), with whom he is said to have founded the Dayah Manyang Leupue in Banda Aceh. He edited and supplemented the Tarjuman al-Mustafid, his teacher's Malay commentary on the whole Qur'an, with material from Arabic exegetical sources. His treatise Masa'il al-Muhtadi li Ikhwan al-Muhtadi became an elementary text taught for centuries in dayah and pesantren across the Malay world.