Death of Ibn Hajar al-Asqalani

Imam Ahmad ibn Ali ibn Hajar al-Asqalani, known as Amir al-Mu'minin fi al-Hadith (Commander of the Faithful in Hadith), died in Cairo. His Fath al-Bari, the most celebrated commentary on Sahih al-Bukhari, took 25 years to complete and remains the gold standard of hadith scholarship.