Imam al-Nawawi
الإِمَام النَّوَوِي
Author of the 40 Hadith and Riyad al-Salihin
Yahya ibn Sharaf al-Nawawi wrote Riyad al-Salihin, the 40 Hadith, and Sharh Sahih Muslim. He died at just 44 having written more than most scholars produce in a lifetime.